We have been given that a circle of a certain radius has an area which is numerically 5 times the value of the circumference. We are asked to find the radius of the circle.

We know that area of circle with a radius of r units is $\pi r^2$ .

We know that circumference of a circle is $2\pi r$ .

5 times the value of circumference would be $5(2\pi r)=10\pi r$ .

Now we will equate 5 times circumference with area as:

$\pi r^2 = 10\pi r$

Let us solve for r.

$\pi r\cdot r = 10\pi r$

$\frac{\pi r\cdot r}{\pi r}=\frac{10\pi r}{\pi r}$

$r=10$

Therefore, the radius of the circle would be 10 units.

5 0

3 years ago

On a 15 scale drawing of a car, one part is 8 inches long. How long will the actual car part be?

Mamont248 [21]

To find your answer out , Multiply 8 by 5 giving u 40 inches . So your answer will be 40 inches long .

3 0

3 years ago

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Calculeaza a-b+c stiind ca a-1538=b+718=2000-c=1074

snow_tiger [21]

A-1538=1074
a=1538+1074
a=2612

b+718=1074
b=1074-718
b=356

2000-c=1074
c=2000-1074
c=926

2612-356+926=3182

8 0

3 years ago

How many miles are in 19.08 kilometers?

Agata [3.3K]

11.8557623 that should be it

6 0

3 years ago

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