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NNADVOKAT [17]
3 years ago
15

What would the circumference be of a circle if the radius is 3 units

Mathematics
1 answer:
MAVERICK [17]3 years ago
7 0

If we have a circle with a radius of 3 we need to find the diameter of the circle.  Remember radius is half of the diameter.  So, the diameter is 6 units.

Use the circumference formula: C=3.14D

C=3.14(6)

C=18.84 units

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Find the percent of increase from 40 gallons to 89 gallons. Round to the nearest tenth of a percent if necessary.
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Solution

- 89 gallons contains 40 gallons twice such that:

89=40+40+9

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- To get the percentage we are looking for, we should use the formula:

\frac{\text{new}}{\text{old}}\times100\text{ \%}

New, in this case, is 89 gallons, Old is 40 gallons.

- Thus, we can calculate the percentage as follows:

\begin{gathered} \frac{89}{40}\times100 \\ =2.225\times100 \\ =222.5\text{ \%} \end{gathered}

Thus, the answer is 222.5%

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3 years ago
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Identify this conic section.
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