Question

The diameter of a sphere is 7m. find the surface area of sphere.​

Answer 1

Answer:

The Surface Area of a Sphere with radius r equals 4πr2 .

Diameter = 7m

Radius = 7/2

A≈153.94m²

Answer 2

Step-by-step explanation:

Given that

Diameter of sphere is 7m

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

r can be calculated by

$r = \frac{d}{2} = \frac{7}{2} = 3.5m$

hence

$surface \: area \: of \: sphere = 4 \times \pi {3.5}^{2} \\ = 153.94 {m}^{2}$