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anzhelika [568]
3 years ago
6

how to find the area of each circle. use a calculator value of pi. round the answer to the nearest tenth

Mathematics
2 answers:
tankabanditka [31]3 years ago
8 0

Answer:

A = 201.0 mi^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know that r = 8

A = (3.14) *8^2

A = 3.14 * 64

A = 200.96 mi ^2

Rounding to the nearest tenth

A = 201.0 mi^2

ziro4ka [17]3 years ago
7 0

Answer:

201.1 mi

Step-by-step explanation:

1. Use the formula for area of a circle which is A=pi r^2

2. Plug in 8 for r (representing the radius):

8^2= 64 x pi = 201.1

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Solve for x round to the nearest tenth
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Answer:

47.0

Step-by-step explanation:

In this right angle triangle, we are faced with a challenge of two sides. The opposite side and the adjacent side, hence the tangent is used.

Where it is the opposite side and hypothenus side, the sine is used and when it is the hypothenus side and adjacent side, the cosine is used.

Hence, we have tan62°=x/25

We cross multiply, to have

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In rounding up numbers, number 1 to 4 will be rounded up to zero, while numbers 5 to 9 will be rounded up to 1.

Rounding up 47.01816 to the nearest tenth. The tenth value is the figure is 0, before it we have 1, which is to hundredth. 1 will be rounded up to zero.

So we have 47.0

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Step-by-step explanation:

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