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What is the surface area of the composite figure? (Use 3.14 for π .) 954.56 in. 2 1,356.48 in. 2 1,155.52 in. 2 1,557.44 in. 2
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Jul 2, 2019
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What is the surface area of the composite figure? (Use 3.14 for π .)
954.56 in. 2
1,356.48 in. 2
1,155.52 in. 2
1,557.44 in. 2
Mathematics
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the picture in the attached figure
we know that
surface area of the figure=[surface area of hemisphere]+[surface area of the cylinder]
step1
find the surface area of hemisphere
surface area hemisphere=2*pi*r²
for r=8 in
surface area hemisphere=2*pi*8²-----> 401.92 in²
step 2
find the surface area of the cylinder
surface area of cylinder=area of the base+perimeter of the base*height
area of the base=pi*r²
for r=8 in
area of the base=pi*8²----> 200.96 in²
perimeter of the base=2*pi*r----> 2*pi*8-----> 50.24 in
surface area of cylinder=200.96+50.24*7-----> 552.64 in²
step 3
surface area of the figure=[surface area of hemisphere]+[surface area of the cylinder]
surface area of the figure=[401.92]+[552.64]-----> 954.56 in²
the answer is
954.56 in²
Rhaokiel
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Jul 9, 2019
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Rhaokiel
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