Author: R.Davies

Sphere
Hemisphere
Radius r
Volume
Surface area

Literacy

Who is credited with deriving the formula for the volume of a sphere?
Why is the Earth not a perfect sphere?

Research

Skills

Question 1

Give your answers correct to 3 s.f.

7 cm

a) Find the volume of the sphere.
b) Find the surface area of the sphere.

Question 2

Question 3

3 cm

10cm

Give your answers correct to 3 s.f.

Leave your answers in terms of π.

a) Find the volume of the hemisphere.
b) Find the curved surface area of the hemisphere.
c) Find the total surface area of the hemisphere.

a) Find the volume of the sphere.
b) Find the surface area of the sphere.

Memory

Volume of sphere =

Surface area
of sphere

= 4 πr 2

A sphere has a surface area of 400 cm2.
Calculate the diameter of the sphere correct to 3 s.f.

Stretch

A sphere has a volume of 9,500 cm3.
Calculate the radius of the sphere correct to 3 s.f.

A sphere has a surface area of 1000 cm2.
Calculate the volume of the sphere correct to 3 s.f.