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kompoz [17]
2 years ago
6

The area of a circle is 153.86 square meters. What is the diameter of the circle? Use 3.14 for π. show you work.

Mathematics
2 answers:
nadezda [96]2 years ago
8 0

Answer:

14 meters²

Step-by-step explanation:

Since the formula to find the diameter is d=2r, we need to first find the radius, which can be r=\frac{\sqrt{A\pi}}{\pi} if we take the formula for the area of a circle and isolate the radius. After simplifying r=\frac{\sqrt{153.86\pi}}{\pi} to 7 and multiplying that by 2, we get the circle's diameter of 14 meters. Hope this helps!

<h2><u><em>Please mark brainliest!</em></u></h2>
MaRussiya [10]2 years ago
3 0
The diameter is 49

you take 153.86 and divide it by 3.14
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Second rectangular:
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3 years ago
Which choice is the solution to the inequality below?<br> 2x &lt; 20
sergey [27]
X less than 10 is the answer I think
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3 years ago
......................<br> 4 x4 x4 x5 x5
Alina [70]
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Read 2 more answers
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snow_tiger [21]
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7 0
3 years ago
A large stand of fir trees occupies 24 hectares. The trees have an average density of 1 tree per 20m squared. A forester estimat
Leona [35]

Answer:

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

Step-by-step explanation:

First, let is find the total amount of fir trees that occupies the area of 24 hectares. (1 hectare = 10000 square meters)

n = \sigma \cdot A

Where:

\sigma - Surface density, measured in trees per square meter.

A - Total area, measured in square meters.

Given that \sigma = \frac{1}{20}\,\frac{tree}{m^{2}} and A = 24\,h, the total amount of fir trees is:

n = \left(\frac{1}{20}\,\frac{trees}{m^{2}}  \right)\cdot (24\,h)\cdot \left(10000\,\frac{m^{2}}{h} \right)

n = 12000\,trees

It is known that one-tenth of the tress are cut, whose amount is:

n_{c} = 0.1 \cdot n

n_{c} = 0.1 \cdot (12000\,trees)

n_{c} = 1200\,trees

If each tree will yield 300 board-feet, then the yield related to the trees that are cut is:

y = S\cdot n_{c}

Where:

S - Yield of the tress, measured in board-feet per tree.

n_{c} - Amount of trees that will be cut, measured in trees.

If n_{c} = 1200\,trees and S = 300\,\frac{b-ft}{tree}, then:

y = \left(300\,\frac{b-ft}{tree} \right)\cdot (1200\,trees)

y = 360000\,b-ft

The yield of the stand if one-tenth of the trees are cut is 360000 board-feet.

8 0
3 years ago
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