Question

Find the surface area of a sphere with a radius of 9 cm. Surface Area = [?] cm?

Answer 1

Answer:

$1,017.36 \: {cm}^{2}$

Step-by-step explanation:

Surface area of a sphere

$= 4\pi {r}^{2} \\ = 4 \times 3.14 {(6)}^{2} \\ = 12.56 \times 81 \\ = 1,017.36 \: {cm}^{2}$

Answer 2

Answer:

1017.36 cm²

Step-by-step explanation:

Given :-

• Radius = 9cm .

We know ,

• SA = 4π r²
• SA = 4* 3.14 * (9cm)²
• SA = 4 *3.14*81cm²
• SA = 1017.36 cm²