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muminat
3 years ago
7

the following 3 shapes are made up of square, circles, and semi circles. Find the Area and perimeter of the shaded area. Write y

our answer as a completely simplified exact value in terms of pi

Mathematics
1 answer:
koban [17]3 years ago
5 0

Answer:

Perimeter = 18 + 9pi

Area = 81 - 20.25*pi

Step-by-step explanation:

Perimeter = 9 + 9 + 2(2 pi r)/2     The twos cancel out.

Perimeter = 18 + 9*pi

Area of the square = 9 * 9 = 81 cm^2

Area of the 2 semicircles = 2 * pi * r^2/2

r = d/2

d = 9

r = 9/2 = 4.5

Area of the 2 semicircles = 2 (pi * 4.5^2)/2

Area of the 2 semicircles = 20.25 pi

Area of the blue figure = 81 - 20.25 pi

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Julie would reach her goal first. Julie would reach her goal in approximately 316 days while it would take Mary approximately 333 days to reach it.

I know this because the steps to solve the problem are:

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2.) 83.333x4 = 333 (multiplying the answer by four makes it every four days)

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4 years ago
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Answer:

20.0%

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The last 30 presidents of America starts from the 16th president, Abraham Lincoln and ends with the current and 45th president, Donald Trump.

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Answer:

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Step-by-step explanation:

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