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Mathematics 24 Online
OpenStudy (anonymous):

Question 2: 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

OpenStudy (anonymous):

@Keigh2015 anychance would u know?

OpenStudy (anonymous):

@mathmate

OpenStudy (anonymous):

@Astrophysics

OpenStudy (anonymous):

@Aureyliant

OpenStudy (anonymous):

Anyone please ill fan and medal ;c

OpenStudy (taramgrant0543664):

The formula for area is A=3.14r^2 In order to do this you will have to divide your diameter by two to get your radius r

OpenStudy (anonymous):

okay i got 4 when i divided

OpenStudy (taramgrant0543664):

Yes your radius is 4 so now you can plug it into the formula. A=pir^2

OpenStudy (anonymous):

My answer would be 16?

OpenStudy (taramgrant0543664):

Yes 16pi is your area

OpenStudy (anonymous):

oKAY would u know question part b

OpenStudy (taramgrant0543664):

For the second part now since the frame is two inches thick all the way around so it adds four inches to your diameter but only two inches to your radius so you will do the exact same thing you did for part A but adding two to you radius so: A=pi(r+2)^2

OpenStudy (anonymous):

Okay would that be 36..rough guess but is it ?????

OpenStudy (anonymous):

@taramgrant0543664

OpenStudy (taramgrant0543664):

Yes it would be because 4+2=6 and 6^2 is 36! So your answer is 36pi good job!

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