What is the approximate area of the composite figure shown? Use three point one four for pi.
A rectangle that is sixteen feet long and ten feet wide has a semicircle attached to its right, ten-foot side. So, the semicircle has a diameter of ten feet.
one hundred thirty point five square feet
one hundred ninety-nine point two five square feet
two hundred thirty-eight point five square feet
four hundred seventy-five square feet
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OpenStudy (anonymous):
@wolf1728 @dg2
OpenStudy (anonymous):
OpenStudy (anonymous):
@paki
ganeshie8 (ganeshie8):
where are you stuck ?
OpenStudy (anonymous):
I don't get it at all.
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ganeshie8 (ganeshie8):
you just need to find the area of `rectangle` and the `semicircle`,
then add them up
ganeshie8 (ganeshie8):
start by finding the area of `rectangle`
OpenStudy (anonymous):
26?
ganeshie8 (ganeshie8):
Area of rectangle = \(\large \text{length} \times \text{width}\)
OpenStudy (anonymous):
oooo nvm.
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ganeshie8 (ganeshie8):
= \(\large 16 \times 10\)
OpenStudy (anonymous):
160ft
ganeshie8 (ganeshie8):
yes !
what about the semicircle ?
ganeshie8 (ganeshie8):
any ideas on how to get its area ?
OpenStudy (anonymous):
Nope.
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ganeshie8 (ganeshie8):
whats the formula for area of circle ?
OpenStudy (anonymous):
pi x r^2
OpenStudy (anonymous):
diameter=10 so r=5
OpenStudy (anonymous):
3.14 x 5 x 5 which = 78.5
OpenStudy (anonymous):
Is it c?
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ganeshie8 (ganeshie8):
you don't have full circle,
so take half of 78.5
ganeshie8 (ganeshie8):
area of semi circle = 78.5/2 = ?
OpenStudy (anonymous):
39.25
ganeshie8 (ganeshie8):
add it to rectangle area
ganeshie8 (ganeshie8):
total area = area of rectangle + area of semi cricle
= 160 + 39.25
= ?
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