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
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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?
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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?
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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?
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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
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OpenStudy (anonymous):
please?
rishavraj (rishavraj):
hold on
OpenStudy (anonymous):
okay
OpenStudy (anonymous):
part B @563blackghost ?
OpenStudy (anonymous):
somebody please!?
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