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Reply To: Surface Area2018-12-02T13:36:38+10:00

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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: $$\frac43\pi r^3$$

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