Question

question: a circle has a radius of 15 inches. what is the area, in square inches, of this circle? (the area of a circle with a radius of r is equal to $pi r^{2}$.) 15$pi$ 30$pi$ 225$pi$ 900$pi$

Explanation:

Step1: Identify the formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius.

Step2: Substitute the radius value

Given $r = 15$ inches. Substitute $r = 15$ into the formula: $A=\pi\times(15)^{2}$.

Step3: Calculate the result

$(15)^{2}=225$, so $A = 225\pi$ square - inches.

Answer:

C. $225\pi$