The Floor of a Rectangular Room That Measures 10 Feet $a = 10 , b = 12$

Multiple Choice

The floor of a rectangular room that measures 10 feet by 12 feet is partially covered with a circular rug with a radius of 4 feet (see figure) . What percent of the floor is covered by the rug? Round your answer to the nearest integer.

$a = 10 , b = 12$

A) 46%
B) 42%
C) 10%
D) 21%
E) 58%