The volume of a sphere

12 questions

1. A ___ is a 3D shape, where every point on its surface is equidistant from the centre.
2. Which of the following calculates the surface area of a sphere, with a radius of r?
3. Match each sphere to its surface area.
4. A sphere has a surface area of 9𝜋 m². The radius of the sphere is ___ m.
5. The radius of this hemisphere is 20 cm. Work out the total surface area of the hemisphere. Give your answer correct to 3 significant figures.
6. The total surface area of this hemisphere is 432𝜋 cm². The radius of the hemisphere is ___ cm.
7. A sphere is a 3D shape, where every point on its surface is ___ from the centre.
8. Work out the volume of a sphere with radius 2.5 m. Give your answer correct to 1 decimal place.
9. A sphere has a radius of 6 mm. The volume of the sphere, in terms of 𝜋, is ___𝜋 mm³.
10. Which of these calculations finds the volume of a hemisphere with a radius of 12 cm?
11. The volume of a hemisphere with a radius of 12 cm, in terms of \pi, is ___\pi cm³.
12. The volume of a hemisphere is 144𝜋 cm³. The surface area of the hemisphere, in terms of 𝜋, is ___𝜋 cm².

License: OGL