The Sum of the Areas of Two Circles Is $421 \pi$

question 215

Multiple Choice

The sum of the areas of two circles is $421 \pi$ square inches. The length of a radius of the smaller circle is 1 inches less than the length of a radius of the larger circle. Find the length of a radius of the larger circle.

• A) 14 in.
• B) 16 in.
• C) 13 in.
• D) 17 in.
• E) 15 in.