Question

find the surface area of a sphere of diameter 14 cm
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Answer 1

Step-by-step explanation:

Given :-diameter of a sphere = 14cm

radius of a sphere =14/2cm= 7cm

surface area of sphere =

$4\pi {r}^{2}$

$= 4 \times \frac{22}{7} \times 7 \times 7 \: sq.cm$

$= 4 \times 22 \times 7 \: sq.cm$

= 616 sq. cm

Answer 2

Answer:

616cm

Step-by-step explanation:

we know the area of a sphere is =4πr^2

so the diameter is 14cm

therefore , the radius = 14/2= 7

area of the sphere = 4πr^2

= 4 *22/2*7*7

= 616 cm