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Bumek [7]
3 years ago
12

Math answer plz need help with this plz answer

Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0

Answer:

176.625 sq.ft, 4.8 sq.ft

Step-by-step explanation:

Area of circle=πr^2 or πd^2/4
11. Given,
d=15 ft
Now,
Area=πd^2/4
3.14*15^2/4
176.625 ft^2
Therefore, the area approximation is 176.6 sq.ft
12.
Given,
d=3.5 ft
Now,
Area= πd^2/8
3.14*3.5^2/8
4.8 sq.ft
I got the answer by dividing the area of circle by 2 as semicircle is half of circle.

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3 years ago
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igor_vitrenko [27]
The answer is 4.

Explanation:

Well, let's break this into pieces.

First, let's work on the first term.

3^8 = 6,561
2^-5 = 1/2^5 = 1/32
9^0 = 1

Multiply all those together, and you get 6,561/32.

Then, if you set that fraction to the power of -2, you get 1,024/43,046,721

Now, let's take the middle term.

2^-2 = 1/4
3^3 = 27

Multiply them together to get 1/108.

Then, set the fraction to the power of 4 to get 1/136,048,896

Next, let's focus on the last term.

3^28 = 22,876,792,454,961

Finally, we have to multiply the terms together.

1,024/43,046,721 · 1/136,048,896 · 22,876,792,454,961

This equals 23,425,835,473,880,000/5,856,458,868,470,016, which can be simplified (quite nicely) to a final answer of 4.
4 0
4 years ago
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