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Can I find solved Try These of Maths NCERT for Class-8?

please explain experts (fig.11.1 in text book)

a rectangular park whose length is 30 m and width is 20 m.

A solid cylinder has surface area of 462 sq cm.Its curved surface area is one third of its total surface area.find the volume of the cylinder.

EXPERTS PLZ ANWER MY QUESTION PLZ PLZ PLZ PLZ PLZ

A river 2m deep and 45m wide is flowing at the rate of 3 km/h.Find the amount of water that runs into the sea per minute.

How many buckets of capacity 15 litres can be filled from a tank 4 m long,2m broad,1.2m high,full of water?

Q- The parallel lines of a trapezium are 25 cm and 11cm ,while its non-parallel sides are 15 cm and 13 cm .Find the area of trapezium.

In a square PQRS, PQ = (5a - 17)cm and QR = (2a + 4). Findthem.

A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1 m.

The bottom of a tank measures 25m X 20m if it contain 2000mcube of water,Find its depth

Ex-14 ( F) question-6 , 9 th part

dear mm ,

i have got the answer but a little confusion i have that

what i have to do with the wallpaper of width 70 cm that is given in the ques.....The diameter of a roller is 84cm and its length is 120cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m

^{2}.The length,breadth and height of a room are 5m, 4m and 3m respectively. Find the cost of white washing the inner of the room and ceiling at the rate of Rs 50 per square metre.

four cubes of edges 5cm are placed side by side and stuck together. if the outer surface alone is painted at Rs.300 per m2. find the cost of painting.

find the number of coins,1.5cm in diameter and 0.2 cm thick,to be melted to form a right circular cylinder with a height of 10 cm and a diameter of 4.5cm.

find the length and breadth of a cardboard required to roll and make a cylinder(hollow without top or bottom) of radius as 14cm and height 40cm

if each edge of a cube is doubled,

1.how many times will its surface area increase?

2.how many times will it volume increase?

In a trapezium ABCD, AB is parallel to CD, AB=30cm, BC=15cm, DC=44cm And AD=13cm. Then what will be the area of the trapezium.

If the length of each edge of a cube is doubled, by how many times does its volume and surface area increase?

water is pouring into a cuboidal reservoir at the rate of 60 litres per minute. if the volume of the tank is 108m cube, find the number of hours it will take to fill the reservoir?

A rectangular sheet of paper of length 10 cm and breadth 8 cm is cut into two identical pieces along the dotted lines as shown below (figure 1). The two pieces are then joined to form a new shape (Figure 2)

?if the height and width of each step in the new shape are EQUAL, what is the Perimeter of the new shape in Figure 2?

A. 36 cm

B. 48 cm

C. 52 cm

D. 56 cm

find the area of a rhombus whose side is 6 cm and whose altitude is 4 cm. if one of its diagonal is 8 cm long, find the length of another diagonal.

The diameter of the semi-circle, FC = 10 cm. The two rectangles ABCD and EDFG have the Same dimensions. The area of the right angled triangle FDC = 24 sq. cm and

FD = 6 cm.

What is the TOTAL AREA of the figure given above?

A. (42 + 10 $\mathrm{\pi}$) sq.cm

B. (120+25$\mathrm{\pi}$) sq. cm

C. (120+25/2$\mathrm{\pi}$) sq.cm

D. (96 +25/2$\mathrm{\pi}$) sq.cm

the diameter of the roller 120 cm long is 84 cm. if it takes 500 complete revolutions to level a playground, determine the cost of levelling at the rate of 30 paise per sq. m.plzz its urgent plzz give me fast ans...today is my test

The radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cu cm . Find its radius?

find the side of a cube whose surface area is 600 cm

^{2}the rainfall recorded on a certAIN DAY WAS 5 c find the volume of water that fell on 2 hectare field

A solid iron rectangular block of dimensions 4.4m*2.6m*1m is cast into a hollow cylindrical pipe of internal radius 30cm and thickness 5cm.Find the length of the pipe.

please answer the question fast please the answer should be112m.

3 cubes of edges 10 cm each are placed side by side nd stuck 2gether. if the outer surface alone is painted @2 p / cm2. Find the cost of painting.

Water flows out through a circular pipe whose internal diameter is 2 cm, at the rate of 6 metre per second into a cylindrical tank , the radius of whose base is 60 cm. Find the rise in the level of water in30 minutes?

Simplify - 1382400/96

a rectangular strip 25cm

cm is rotated about the longer side .find the total surface area of the solid thus generated.X 7A room 6m long and 4m wide needs 1000 tiles for its floor. How many tiles will be nedded for a hall 12m long and 8m wide?

The lateral surface area of a hollow cylinder is 4224 cm

^{2}. It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular sheet?a saree is 5 meter long and 1.3 meter wide. a border of width 25 centimeter is printed along all side .find the cost of printing the border at 1rupees per 100 centimeter

^{2.}The outer dimensions of a closed wooden box are 10cm by 8cm by 7cm. Thickness of the wood is 1cm. Find the total cost of wood required to make the box if 1cm

^{3}of wood costs Rs.2Options:

1) 18 . 2) 20. 3) 10. 4) 15

Pls ANSWER WITH EXPLANATION.

A iron pipe is 21 m long and its exterior diameter is 8cm.If the thickness of the pipe is 1cm and iron weight 8g/cm

^{3},find the weight of pipe?The diameter of a wheel of a bus is 90cm which makes 315 revolutions per minute. Determine its speed in kmph.

PLZZZZZANSWER QUICK

What is the answer of ncert maths book class 8, ch. MENSURATION pg 176, TRY THESe Q. 3 For future i would like to know where can i get the answers of try these of ncert book

The base and corresponding altitude of a parallelogram are 10 and 12 cms.if the other altitude is 8 cms find the length of other pair of parallel sides.please help me with this question.

Thnx

A textbok measuring 15cm*10cm*2.5cm is to be covered with brown paper. find how much paper is required for covering the book if 84 sq.cm gets used up in folds?

please help me out.

The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m

^{2}is Rs 4.1) quadrilateral ABCD where AB = 5cm , BD = 6cm, CD = 5.8 cm,DA = 4.3 cm, BC =5.5cm

2) quadrilateral PQRS where PQ = QR = RS =SP=8cm and angle R = 85° .

3) quadrilateral MNOP where MN =3cm , NO=5cm, OP =5cm,PM=4cm and angleN = 105°

verify euler's formula for cuboid prism of pentagon base,pyramid of square and pentagon base

1) ----- is the distance around a closed figure.

2) The distance around a circular region is called it's -----.

3) 1 acre= ----- m sq.

4) The area of a circular ring with outer and inner radii r1 and r2, respectively,is -----

Pls ans fast....needed urgently

The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area and the perimeter of the garden [Length of rectangle is 20 − (3.5 + 3.5) metres]

The lateral surface area of a hollow cylinder is 4224 cm square. It is cut along its height and formed a rectangular sheet of of width 33 cm. Find the perimeter of the rectangular sheet?

The lenght ,breadth and height of a cuboidical water tank is 7m,6m, and 15m respectively.If 8400l of water is pumped out of the water tank,find the fall in the water level in the water tank.

sir, please give me the proper solution with explation of following questions?

Q.A box with lid is made of wood which is 3 cm thick. It's external length,breadth and hieht are 56 cm,39 cm and 30 cm respectively.Find the capacity of the box.Also find the volume of wood used to make this box.

Q.If V is the volume of cuboid of dimension a,b and c and S is it's surface area , then prove that:-

1/v =2/s [1/a +1/b +1/c]A vessel of cylindrical shape without a lid is made from a sheet of metal.Find the area of metal required, if the length of a vessel is 48 cm and its diameter is 28 cm.

Find the altitude of rhombus whose area is 420cm(sq) and the perimerter is 140 cm..

A box without a lid is made of wood which is 3 cm thick. Its external dimensions are 86 cm x 60 cm x 45 cm. Find:

1. the capacity of the box in cubic centimetres,

2. the volume of wood used in making the box, and

3. the weight of the empty box,if 1 cubic centimetre of wood weighs 0.8 grams..........

a suitcase with measure 80cm x 48cm x 24cm is to be covered with a tarpaulin cloth. How many metres of tarpaulin of width 96cm is required to cover 100 such suitcases?

mensuration powerpoint presentation

give the curved surface area,total surface area,volume(formula)-cube, cuboid, cylinder.give the perimeter,area (formula)-square, rectangle,circle, triangle, parallelogram, rhombus, trapezium????????que - a seven metre long cylindrical wire has a radius of 8 mm . find the curved surface area of the wire .

^{2}The area of a courtyard is 3750m2. Find the cost of covering it with gravel to a height of 1cm if the gravel costs Rs 6.40 per cubic metre

The areas of 3 adjacent faces of a cuboid are 180 sq.cm , 96 sq. cm and 120 sq. cm . Find the volume of the cuboid ?what is the formula for area of circle??

A closed wooden box 80cm long,65cm wide and 45cm high, is made of wood 2.5cm thick.Find the capacity of the box and its weight if 100cm

^{3}of wood weighs 8gthe inner circumference of a circular track is 220 m. The track is 7 m wide everywhere. Calculate the cost of putting fence along the outer circle at Rs.2 per metre.Q. In the following figure, each of the four shaded rectangles has an area of 21 cm

^{2}^{ }and a perimeter of 20 cm.What is the perimeter of the square formed in the middle?A.12cm

B.16cm

C.20cm

D.24cm

what is difference between polygon and quadrilateral??plz answer faster.....

Simplify:

(x+y+z)whole square +(x+y-z)whole square

3 men or 5 women can do a work in 12 days. how long will 6 men and 5 women take to do it.

The volume of a cuboid is 27 cm3.Find its surface area.

Find the height of a cuboid whose base area is 180 cm

^{2}and volume is 900 cm^{3}?the diameter of the lawn mover is 42cm and length is 1.5m.