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Maths Made Easy Forums Standard Measurement Surface Area Reply To: Surface Area

Keymaster
Post count: 659

A sphere has a radius of 10cm. Find:
a. the surface area
b. the volume

a. Surface area = $4\times\pi\times10^2$
= 1256.5cm2
Use the surface area formula: $4\pi r^2$

b. Volume = $\frac43\pi\times 10^3$
= 4188.8cm3Use the volume formula: $\frac43\pi r^3$