## madisonmaruhnich94 3 years ago Find the surface area of the sphere to the nearest square unit. hold on, i have to draw it

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2. lgbasallote

$\huge SA = 4\pi r^2$ will that help?

3. Doman

just make sure ur using the radius not the diameter

no it doesn't help/: A. 13 in.2 B. 50 in.2 C. 6 in.2 D. 3 in.2

how do i find the answer

6. lgbasallote

2?

8. lgbasallote

no. that is the diameter. to get the radius, divide that by 2

so 1?

10. lgbasallote

right. so substitute that to the equation i gave you

i feel like an idiot, idk what to do

12. lgbasallote

r = 1 right? because it's the radius`

yes

would it be 3 in^2

15. lgbasallote

so replace r with 1 in the equation i wrote...what do you get?

13 in^2

?

18. lgbasallote

will you elaborate how you got that?