Question

Radius of the Sphere is 7 cm the surface area of the sphere is _____

Answer 1

Answer:

616 cm²

Step-by-step explanation:

SA of sphere = 4$\pi$r²

= 4*22/7*7*7*

= 4*22*7*

= 616 cm²

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Answer 2

Step-by-step explanation:

Given that

Radius of sphere is 7 cm

To find

Surface area of sphere

Solution

As we know that

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

where r is radius of sphere then

$surface \: area \: of \: sphere = 4 \times \frac{22}{7} \times {7}^{2}$

as we have put

$\pi = \frac{22}{7}$

hence

$surface \: area \: of \: sphere = 616 {cm}^{2}$