Question

FAN AND MEDAL PLEASE HELP
A circular dish has a diameter of 9 inches. What is the area of the dish? Use the formula a=pi r^2
A. 12.56pi in^2
B. 16pi in^2
C. 20.25pi in^2
D. 81 pi in^2
Please explain work step by step. Fan and medal

Answer 1

The Area is given by teh formula: \(A = \pi r^2\)

Answer 2

just plug r = 9 inches and find A

Answer 3

But the diameter is 9 inches. It doesn't say the radius is 9 inches. Are they both 9 in this case?

Answer 4

@M4thM1nd

Answer 5

Ohh sorry, i thought i read radius, your are right, \(2r = 9\), so \(r = 9/2 = 4.5\)

Answer 6

the radius is 4.5 right?

Answer 7

yes

Answer 8

I just plug it in? if I just plug it in ill just get a number. I need the answer in terms of pi like in the multiple choice I put in the question

Answer 9

i think it is c. 20.25pi

Answer 10

Thats correct!