# Form 2 Mathematics Questions and Answers on Surface Area of Solids

Form 2 Mathematics Questions and Answers on Surface Area of Solids

Lessons (**10**) * SHARE*

- 1.
Find the surface area of each of the following solids:

6m 1s - 2.
Find the surface area of a hollow cylindrical iron pipe 2.1 m long and external diameter 15 cm, given that the metal iron is 1 cm thick.
(Give your answer in #m^2#)

4m 50s - 3.
A metal storage water tank is in the form of a cylinder with one hemispherical end of radius 2 m. If the other end is flat and the total height of the tank is 8m, calculate the outer surface area of the tank.

2m 32s - 4.
A right cone of base diameter 8 cm and height 13 cm is slit and opened out into a sector. Find the angle formed by the two radii of the sector.

3m 47s - 5.
A right pyramid 6 cm high stands on a rectangular base 6 cm by 4 cm. Calculate the surface area of the pyramid.

4m 32s - 6.
A spherical ball is 15 cm in diameter. Find its surface area.

0m 30s - 7.
A right pyramid on a square base 8 metres is 15 metres high.
(a) Find its surface area.
(b) If the pyramid is cut at a height of 6 metres from the bottom, find the surface area of the frustum formed.

7m 11s - 8.
A solid frustum of a right pyramid with a square bottom and a square top of side 2 m and 1 m respectively. If the height of the frustum is 1.5 metres, find its surface area.

5m 26s - 9.
A water container is a frustum of a cone whose upper and lower radii are 35 cm and 26 cm respectively. If the height of the container is 60 cm, calculate the outer surface area of the material used to make the container.

5m 54s - 10.
A scientist using a telescope observed a spherical object moving in space. She established that the object has a radius of 17.5 m. Find the surface area of the object.

0m 44s

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