What is the surface area of a sphere that has a radius of 5cm? use 3.14

Question

Mathematics

Charlotte David

19 January, 19:04

What is the surface area of a sphere that has a radius of 5cm? use 3.14

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Answers (2)

Know the Answer?

Yellow · Answer 1

The answer is 314cm ².

The formula for the surface area of a sphere is: A=4πr ².

A=4 * 3.14*5 ²

First solve for exponents.

A=4 * 3.14 * 25

Then multiply.

A=314cm ²

Kayla Velez · Answer 2

Surface area of a sphere is roughly 4 times the area of a circle with same readius

aka

SA=4pir^2

pi=3.14 for this problem

r=5

SA=4*3.14*5^2

SA=4*3.14*25

SA=100*3.14

SA=314

answer is 314 cm^2