Question

The area of a circle is 25pie in.2. What is it’s radius?

Answer 1

5 is the radius.

Explanation:

Since the formula for area in a circle is
`\pi r^(2)`, we can substitute 25 for r squared.

Since 25 is equal to r squared, it means that r is equal to 5.

5 is the radius.

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Answer 2

The area of a circle is PI x r^2

25PI = PI x r^2

Divide both sides by PI:

25 = r^2

Take the square root of both sides:

Radius = 5 inches.