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

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.

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.

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.

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.

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

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

The wheel of loco engine,7.5 meters in radious,makes7 revolutions in 9 seconds. The speed of the train in km/hr would be;

(a) 130 (b)135 (c) 150 (d) 132

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}.A 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 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.

please explain experts (fig.11.1 in text book)

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

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.

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?

Please answer my query!!

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?

Two trains 500m and 700m long are going with speeds 70km/hr and 50km/hr respectively in opposite direction. How long will it take to pass eachother ?

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 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 volume of a cube is 27,000 cm3 (cm cube). Find the side of cube.

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}is [dm] or decimeter is smaller than [mm] melimeter.

and what formula we will use when we have to convert 1 dm into km , cm and mm.

and what formula we will use when we have to convert 1 km , m, mm and cm. plzz help me as fast as you can. plzzzzzzzzzzzzzzzzzzzzz.

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

(a)curved surface area of one pillar (b) curved surface area of 50 such pillars (c)

cost of white washing the curved surface of 50 pillars at the rate of ₹30 per m

^{2}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.

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?

a rectangular strip 25cm

cm is rotated about the longer side .find the total surface area of the solid thus generated.X 7what is the formula for finding the area of scalene triangle?

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

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

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?A) cube with side 5 cm

B) sphere with radius 3 cm

C) cuboid with sides 2 cm, 3 cm, 10 cm

D) cylinder with radius 2 cm and 10 cm

The diameter of a wheel of a bus is 90cm which makes 315 revolutions per minute. Determine its speed in kmph.

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

(a) Area of the flower beds

(b) Area of walking path

(c) Area of grassy portion

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

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

golu lent polu rs 32 ,500 to purchase a bike at 12.5% per annum . if the interest is compounded semi annually find the interst paid by polu after 1 1/2 years ans 6482.54

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]

two solids of right cylendrical shape are 49 cm and 35 cm high and thier base diameters are 16 cm,14 cm respectively.Both are melted and moulded into a single cylinder,56cmhigh find its base diameter

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?

A circular garden has a circumference of 220 cm. there is a 7m wide border inside the garden along its periphery.what is the area of the border

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]7. A picture of dimensions 30cm by 18cm has a wooden frame of width 1.5cm around it. Find the area of the frame by dividing it into four trapeziums. Verify your answer by finding the difference of the rectangular areas of the picture with and without the frame.

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

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?

in a building there are 20 cylinders pillars the radius of each pillar is 14cm and hieght 5m find the total cost of painting the curved surface area of all pillars at the rate of rs 8 per m {square}

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

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????????^{2}plz answer this question

find the TSA and weight of the hollow cylinder lead pipe 28cm long and 0.5cm thick, if its external diameter is 5cm.(weight of 1cubic cm of lead is 11g)

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 8gwhat is difference between polygon and quadrilateral??plz answer faster.....

if AG ║EC, prove thatar (rect ABCD) = ar ( rect EFGD).

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

A 8 cm square

B 16 cm square

C 18 cm square

D 24 cm square

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

^{2}and volume is 900 cm^{3}?A room is 5 metres long, 4 metres broad and 3 metres high. Find the area of the four walls. Also find the area of the ceiling and area of the floor. If it costs Rs 0.30 to whitewash 1 decimetre^{2}(dm^{2}) of the wall, find the cost of whitewashing the four walls and the ceiling.{Plz answer this question fast, coz tomorrow I have a test}