©MathsWatch
Clip 169
Spheres
Grade 5 questions
r3
Volume of a sphere = 4
3
Surface area of a sphere = 4 r2
1)
a) Work out the volume of the sphere.
b) Work out the surface area of the sphere.
12 cm
2)
a) Work out the volume of the sphere, leaving your answer in terms of
.
b) Work out the surface area of the sphere, leaving your answer in terms of
.
10 cm
3)
a) Work out the volume of the solid hemisphere.
b) Work out the surface area of the solid hemisphere.
5.5 cm
Page 169
©MathsWatch
Clip 169
Spheres
Grade 5 answers
r3
Volume of a sphere = 4
3
Surface area of a sphere = 4 r2
1)
a) Work out the volume of the sphere. 7239.168 cm3
b) Work out the surface area of the sphere. 1809.792 cm2
12 cm
2)
a) Work out the volume of the sphere, leaving your answer in terms of
.
b) Work out the surface area of the sphere, leaving your answer in terms of
4000
π cm3
3
. 400π cm2
10 cm
3)
a) Work out the volume of the solid hemisphere. 348.50 cm3
b) Work out the surface area of the solid hemisphere. 285.14 cm2
5.5 cm
Page 169