What is the area of the figure below ? Use 3.14 for pi. Round to the nearest tenth. Figure is a rectangle with a semicircle (length of 3m and width of 8m) A. 24.0 m^3 B. 27.5 m^3 C. 31.1 m^3 D. 38.1 m^3

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What is the area of the figure below ? Use 3.14 for pi. Round to the nearest tenth. Figure is a rectangle with a semicircle (length of 3m and width of 8m) A. 24.0 m^3 B. 27.5 m^3 C. 31.1 m^3 D. 38.1 m^3

Mathematics
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Where is the figure?
I'm on an iPad so I couldn't make it or something , but the figure is a rectangle with a semicircle With a length of 3m and a width of 8m @joyraheb
like this @kenialove ? |dw:1441151363661:dw|

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Yes but to the side and the rectangle part is a little bit longer than that @jim_thompson5910
I see. Where do the numbers go?
The length of the side of the rectangle is 3m , and the width of the bottom of the rectangle is 8m
so this? |dw:1441152032975:dw|
Yes
what is the area of just the rectangle?
Would it be 24 ?
yes
how about the semi-circle?
I'm not sure but.. would the radius of it be 1.5 because half of 3 is 1.5 ?
|dw:1441152263622:dw| agreed?
Wait the numbers are on the wrong sides .. It's actually the other way around
oh, like this? |dw:1441152365374:dw|
Yes
ok, so yeah, the radius is 1.5
what is the area of a circle with radius 1.5 ?
`Use 3.14 for pi`
I got 7.065 is that right ? I did : A = pi r^2 A = 3.14 x 2.25 A = 7.065
good
now cut that in half because we only have half of the circle
7.065 / 2 = 3.5325
area of rectangle = 24 area of semi-circle = 3.5325 add them up to get the area of the entire figure
Is that right ?
yeah you have the correct semi-circle area. Now add up the two areas to get your answer
area of rectangle = 24 area of semi-circle = 3.5325 add them up to get the area of the entire figure
27.5325
then round that to the nearest tenth
So the answer would be B. 27.5 right
yep
Thanks so much !
you're welcome

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