Question

the surface area of a sphere whose diameter iS 28 is​

Answer 1

the surface area of a sphere whose diameter iS 28 is

then radius will be 28/2 =14

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

$4\pi {r}^{2} = 4 \times \frac{22}{7} \times {(14)}^{2}$

$4 \times \frac{22}{7} \times 196$

$4 \times 22 \times 28 = 88 \times 28 = 2464$

surface area is 2464unit square