Question

A circular picture is 8 inches in diameter.

Part A
What is the area of the picture in square inches?

A. 4π square inches
B. 8π square inches
C. 16π square inches
D. 32π square inches
Part B
A frame that is 2 inches wide surrounds the picture. What is the total area of the picture and the frame in square inches?

A. 4π square inches
B. 12π square inches
C. 36π square inches
D. 40π square inches

Answer 1

Area of a circle:\[A=\pi*r ^{2}\]

Answer 2

First step is to find the radius of the circle. We know that radius is half the diameter. So, what is the radius?

Answer 3

4

Answer 4

so a? for number 1

Answer 5

oh thanks cx okay could u help me with part b

Answer 6

Wait for part A we forgot to square it.

Answer 7

SO what is 4^2?

Answer 8

16.. so for part A, C is the answer

Answer 9

okay but i need part b xc

Answer 10

part b is answer c? 12 ill give anyone a medal please help

Answer 11

part b is exactly the same as part A, except now you've added 2 to the radius. The radius is 6. Use the formula to find the area

Answer 12

so 18^2
?????

Answer 13

What number should go in for r in part b if the radius is 6?

Answer 14

12! cx???????????????????

Answer 15

or no the answr is not 12

Answer 16

how are you getting 12? You're not showing what you're doing

Answer 17

i thought u double 6..sorry

Answer 18

not double 6, but 6 squared.
6² means 6 * 6

Answer 19

36

Answer 20

yes

Answer 21

so thats my asnwer

Answer 22

36π is the area

Answer 23

THANK YOU SO MUCH c: