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0:01:31

Find the volume of a sphere whose surface area is 154 cm2.

0:03:52

A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find..

0:02:46

The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction....

0:04:52

A dome of a building is in the form of a hemisphere. From inside, it was white-washed at the cost...

0:02:32

Find the volume of a sphere whose radius is i) 7cm ii) 0.63 m

0:01:58

A capsule of medicine is in the shape of a sphere of diameter 3.5 mm. How much medicine (in mm3)....

0:03:20

Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere....

0:03:02

The diameter of a metallic ball is 4.2 cm. What is the mass of the ball, if the density of the....

0:03:10

Find the amount of water displaced by a solid spherical ball of diameter: i) 28 cm ii) 0.21 m

0:02:37

How many litres of milk can a hemispherical bowl of diameter 10.5 cm hold?

0:01:30

The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base.

0:04:00

A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the...

0:04:54

A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its...

0:02:08

If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume...

0:00:48

Find the total surface area of a hemisphere of radius 10 cm.

0:04:28

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall...

0:17:52

A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?

0:02:05

A joker’s cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find...

0:05:21

What length of tarpaulin 3 m wide will be required to make conical tent of height 8 m and base....

0:01:24

If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base.

0:02:51

A solid cube of side 12 cm is cut into eight cubes of equal volume. What will be the side of the....

0:02:36

A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold?

0:09:20

Find the surface area of a sphere of radius: i) 10.5 cm; ii) 5.6 cm; iii) 4 cm

0:04:00

A village, having a population of 4000, requires 150 litres of water per head per day. It has.....