Question

Find the surface area of the sphere to the nearest square unit. Use a calculator.

"Im Gonna Draw The Picture So Hold On, I Don't Know How To Get The Answer So Please Help"

A. 13 in.2

B. 50 in.2

C. 6 in.2

D. 3 in.2

Answer 1

To find surface area, it's simple, just sub your givens into the formula.
4pir2

Answer 2

4(pi)r2
What is your radius? Sub that into the formula.

Answer 3

is 2in your radius or diameter?

Answer 4

clearly the diameter

Answer 5

No The Line About The 2in I Think Is The Radius

Answer 6

^Above

Answer 7

Give him a chance to do it, don't just give the answer.

Answer 8

k ill just give you the formula
A=4pi(radius)square

Answer 9

For any problem involving a formula.
1. List out your givens.
2. Sub givens into formula.

Answer 10

How Are U Guys Getting The Number 4??

Answer 11

That's just part of the formula 4pi(r)^2

Answer 12

that is a constant in the formula - for any sphere
SA = 4 pi r^2

Answer 13

Understanding the theory behind it is unnecessary, don't worry about that.

Answer 14

Haha Ok Thanks