Question

if the diameter of a sphere is 14 cm then what is the surface area (in cm2) of the sphere?

Answer 1

$surface \: area \: of \: sphere \: = 4\pi \: {r}^{2} \\ diameter \: of \: sphere \: = 14cm \\ radius \: of \: sphere = 7cm \\ tsa \: of \: sphere = 4 \frac{22}{7} \times 7 \times 7 \\ = 616c {m}^{2}$

Answer 2

Answer: The surface area of the sphere is 616 cm².

Step-by-step explanation:

Since we have given that

Diameter of a sphere = 14 cm

Radius of a sphere = $\dfrac{14}{2}=7\ cm$

As we know that

Surface area of the sphere = $4\pi r^2$

Surface area of sphere is given by

$4\dfrac{22}{7}\times 7\times 7\\\\=616\ cm^2$

Hence, the surface area of the sphere is 616 cm².