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
@Jaynator495
@haleyelizabeth2017
Can you draw these pictures?
its says a circular picture is 8 inches in diameter @kohai
Do you know the formula for an area of a circle?
no... @kohai
I don't see any pictures....
\[A = \pi*r^2\]
there is no picture all it says is a circular picture is 8 inches in diameter then the questions..
So you know that the radius is twice the diameter right? So if the diameter is 8, the radius has to be 4?
@kohai gave you the formula to use
yea ohh so is the area 157.75? :s
bc 3.14 times 4 is 12.56 and the squared is 157.75
You're going to use pi here instead of 3.14. See how your answer choices all have pi in it? That's how you know. So you're going to do A=pi 4^2 = 16pi.
For the second part, the radius is increased by 2 because there's a border around it. So instead of the radius being 4 in the equation it'll be 6. What is the area for the second part?
12pi? @kohai
No. You added, you didn't multiply. A=pi r^2 A=pi 6*6 A=36pi
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