Question

find surface area of a sphere of radius. 14cm​

Answer 1

$given \: radius \: of \: sphere \: = 14cm$

$surface \: area \: of \: the \: sphere \: = 4\pi {r}^{2}$

$4 \times \frac{22}{7} \times 14 \times 14$

$4 \times 22 \times 2 \times 14$

$2464 \: cm {}^{2}$

Answer 2

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If π = 23/7, then

Surface area of sphere = 4πr²

= 4×(22/7)×(14)²

= 2464 cm²

If π = 3.14, then

surface area of sphere = 4πr²

= 4×(3.14)×(14)²

= 2461.76 cm²