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OpenStudy (lordhelix8th):
Which figures can be used to find the area of the composite figure?
Choose exactly two answers that are correct.
A.
a triangle with an area of 96 in2
B.
a triangle with an area of 192 in2
C.
a semicircle with an area of 50 in2
D.
a semicircle with an area of 100 in2
11 years ago
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OpenStudy (lordhelix8th):
11 years ago
OpenStudy (lordhelix8th):
...................................................................................
11 years ago
OpenStudy (lordhelix8th):
@acxbox22 @samanthagreer
11 years ago
OpenStudy (lordhelix8th):
@GreenCat
11 years ago
OpenStudy (lordhelix8th):
plzz help
11 years ago
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OpenStudy (greencat):
the area of the semicircle must have pi in it somewhere
11 years ago
OpenStudy (greencat):
so remove c and d
11 years ago
OpenStudy (lordhelix8th):
so a and b
11 years ago
OpenStudy (lordhelix8th):
yes or no
11 years ago
OpenStudy (greencat):
a OR b
11 years ago
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OpenStudy (greencat):
area of triangle= leg1xleg2/2
11 years ago
OpenStudy (greencat):
so 16x12/2
11 years ago
OpenStudy (greencat):
which is 48x2
11 years ago
OpenStudy (lordhelix8th):
Choose exactly two answers that are correct.
11 years ago
OpenStudy (greencat):
oh ok
11 years ago
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OpenStudy (greencat):
so there is pi in the semicircle
11 years ago
OpenStudy (greencat):
but the pi is not visible in copypaste
11 years ago
OpenStudy (greencat):
d=20
r=10
Area=r^2pi
11 years ago
OpenStudy (greencat):
Area=10^2pi=100pi
11 years ago
OpenStudy (greencat):
but it is a semicircle so divide by 2
11 years ago
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OpenStudy (greencat):
100/pi/2=50pi
11 years ago
OpenStudy (lordhelix8th):
so a and c
11 years ago
OpenStudy (greencat):
yes
11 years ago
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