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Mathematics 7 Online
OpenStudy (anonymous):

WILL FAN AND GIVE MEDAL 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):

@mathstudent55 @leonardo0430 @bohotness

rishavraj (rishavraj):

u r having the diameter..... radius = diameter/ and u how to calculate the area

OpenStudy (anonymous):

i don't understand :(

rishavraj (rishavraj):

for part A diameter = 8 inch so radius = 8/2 = 4 inch area of circle = pi* r^2

OpenStudy (anonymous):

so for part the answer is A?

OpenStudy (anonymous):

@rishavraj

rishavraj (rishavraj):

\[area = \pi r ^{2} \]

OpenStudy (anonymous):

what do that means

rishavraj (rishavraj):

for part A diameter = 8 inch so radius i.e "r" = 8/2 = 4 inch area of circle = \[\pi \times r ^{2} \]

OpenStudy (anonymous):

i am not good at math can you please help me out?

OpenStudy (anonymous):

b?

rishavraj (rishavraj):

area = \[\pi \times r^2\] r = 4 inch so area = \[\pi \times 4^2\]

OpenStudy (anonymous):

so its 8?

rishavraj (rishavraj):

nah not B....:(

OpenStudy (anonymous):

then its C?

rishavraj (rishavraj):

yeah...

OpenStudy (anonymous):

thank yuo what about part B

OpenStudy (anonymous):

is it not B for part B @rishavraj

rishavraj (rishavraj):

is it 2 inches wide???

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

please?

rishavraj (rishavraj):

hold on

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

part B @563blackghost ?

OpenStudy (anonymous):

somebody please!?

563blackghost (563blackghost):

This question has been previously asked and it explains well how to solve http://openstudy.com/study#/updates/53fb3bc8e4b0010fcd98bfb7

OpenStudy (anonymous):

thank you

563blackghost (563blackghost):

np xD

OpenStudy (anonymous):

RISH I TOLD YOU IM NOT GOOD AT MATH

rishavraj (rishavraj):

@LeilaJudeh as usual....lolxD

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