Question
Find the surface area of a sphere of radius 7 cm.
✓
Answer
Radius of sphere, $r=7 cm$
As we know, the surface area of sphere, $A=4 \pi r^2$
On substituting the values, we get,
$A = 4 \times \frac{22}{7} \times 7^2$
$\Rightarrow A =616 sq . cm$
$\therefore$ Surface area of sphere is 616 sq. cm
As we know, the surface area of sphere, $A=4 \pi r^2$
On substituting the values, we get,
$A = 4 \times \frac{22}{7} \times 7^2$
$\Rightarrow A =616 sq . cm$
$\therefore$ Surface area of sphere is 616 sq. cm
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