Question

Pls help i give u brainliest​

Answer 1

Answer:

The answer is 324π m².

Step-by-step explanation:

Given that the surface area of sphere formula is S.A = 4×π×r² where r is radius. The diameter of sphere is 18m so you have to divide it by 2 to find it's radius :

$radius = diameter \div 2$

$radius = 18 \div 2$

$radius = 9m$

Then substitute into the formula :

$s.a = 4 \times \pi \times {r}^{2}$

$let \: r = 9$

$s.a = 4 \times \pi \times {9}^{2}$

$s.a = 4 \times \pi \times 81$

$s.a = 324\pi {m}^{2}$

Answer 2

Answer:

The answer is 324π m².

Step-by-step explanation:

Given that the surface area of sphere formula is S.A = 4×π×r² where r is radius. The diameter of sphere is 18m so you have to divide it by 2 to find it's radius