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denakatyataSie
denakatyataSie denakatyataSie
  • 05-09-2016
  • Mathematics
Answered

An earthquake was felt throughout a circular area of 1,808.64 square miles. What was the radius of the circular area?

A24 miles
B576 miles
C12 miles
D20 miles

Verified Answer :

skyluke89
skyluke89 skyluke89
  • 14-11-2018

A. 24 miles

Explanation:

the area inside a circle is given by:

\(A=\pi r^2\)

where r is the radius of the circle.

In this problem, we know the circular area:

\(A=1,808.64 mi^2\)

So we can re-arrange the equation above to find r, the radius:

\(r=\sqrt{\frac{A}{\pi}}=\sqrt{\frac{1,808.64}{\pi}}=24.0 mi\)

so, the radius of the circular area is 24 miles.

Answer Link
YuriVladmir01 YuriVladmir01
  • 30-12-2018

Answer:

24 miles

Step-by-step explanation:


Answer Link

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