A circular piece of fabric has a radius of 1.2 feet.
The fabric sells for $5.40 per square foot.
What is the total cost of the circular piece of fabric?
A.
$6.48
B.
$20.35
C.
$24.42
D.
$40.69
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OpenStudy (anonymous):
@iGreen
OpenStudy (anonymous):
i can help
OpenStudy (anonymous):
okay thanks so u know what the answer is @plush123
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
40.6944
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OpenStudy (igreen):
Find the area.
OpenStudy (anonymous):
im not 100% sure but im 90%sure
OpenStudy (igreen):
\(A = \pi r^2\)
OpenStudy (anonymous):
oh i thought you find the circumference sorry
OpenStudy (igreen):
\(A = (3.14)(1.2^2)\)
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OpenStudy (anonymous):
do u agree with that @iGreen
OpenStudy (igreen):
No..
OpenStudy (anonymous):
listen to igreen hes a proffesor
OpenStudy (igreen):
Btw, @plush123 We have to guide him to the answer..and not give it.
OpenStudy (anonymous):
sorry
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OpenStudy (igreen):
It's okay
OpenStudy (anonymous):
okay i will @plush123 so what what do i do? @iGreen
OpenStudy (igreen):
Simplify this
\(A = (3.14)(1.2^2)\)
OpenStudy (anonymous):
c?
OpenStudy (anonymous):
@iGreen
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OpenStudy (igreen):
Correct!
OpenStudy (anonymous):
good job
OpenStudy (igreen):
3.14 * 1.2 * 1.2 = 4.5216
4.5216 * 5.4 = 24.41664
24.41664 is approximately $24.42
OpenStudy (anonymous):
THANKS :) @iGreen
OpenStudy (anonymous):
can u help with a one more? @iGreen
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OpenStudy (anonymous):
i can
OpenStudy (igreen):
Sure
OpenStudy (anonymous):
okay thank u guys @plush123 @iGreen
Question Navigator
Choose exactly two answers that are correct.
3.
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
OpenStudy (igreen):
One question per post, close this and open a new one.