A Brush Fire Is Burning a Circular Area Whose Radius $225 \pi \mathrm{ft} 2 / \mathrm{min}$

Multiple Choice

A brush fire is burning a circular area whose radius is increasing at a rate of 3 feet per minute. How fast is the area of the fire increasing when its radius is 25 feet?

A) $225 \pi \mathrm{ft} 2 / \mathrm{min}$
B) $625 \pi \mathrm{ft} 2 / \mathrm{min}$
C) $75 \pi \mathrm{ft}^{2} / \mathrm{min}$
D) $150 \pi \mathrm{ft} 2 / \mathrm{min}$