Find the area. Leave your answer in terms of pi.
-A semicircle with radius $7 \mathrm { mi }$
A) $49.00 \pi \mathrm { mi } ^ { 2 }$
B) $24.50 \pi \mathrm { mi } ^ { 2 }$
C) $14.00 \pi \mathrm { mi } ^ { 2 }$
D) $28.00 \pi \mathrm { mi } ^ { 2 }$

Question

Quizplus · Accepted Answer

The area of a full circle is $\pi r^2$. For a semicircle, it is half of that: $\frac{1}{2} \pi r^2$. With a radius of 7 mi, the area is $\frac{1}{2} \pi (7)^2 = 24.5 \pi \mathrm{mi}^2$.

Find the Area 7mi7 \mathrm { mi }7mi A) 49.00πmi249.00 \pi \mathrm { mi } ^ { 2 }49.00πmi2

Find the Area $7 \mathrm { mi }$ A) $49.00 \pi \mathrm { mi } ^ { 2 }$