Find the area. Leave your answer in terms of pi.
-A ring of width 4 ft surrounding a circle with radius 291 ft
A) $87,025 \pi \mathrm { ft } ^ { 2 }$
B) $16 \pi \mathrm { ft } ^ { 2 }$
C) $84,681 \pi \mathrm { ft } ^ { 2 }$
D) $2344 \pi \mathrm { ft } ^ { 2 }$

Question

Find the area. Leave your answer in terms of pi.
-A ring of width 4 ft surrounding a circle with radius 291 ft 
A) $87,025 \pi \mathrm { ft } ^ { 2 }$
B) $16 \pi \mathrm { ft } ^ { 2 }$
C) $84,681 \pi \mathrm { ft } ^ { 2 }$
D) $2344 \pi \mathrm { ft } ^ { 2 }$

Quizplus · Accepted Answer

The area of the ring is the difference between the area of the larger circle (radius 295 ft) and the smaller circle (radius 291 ft). The area is $\pi(295^2 - 291^2) = \pi(87025 - 84681) = 2344 \pi \mathrm{ ft }^2$.

Find the Area 87,025πft287,025 \pi \mathrm { ft } ^ { 2 }87,025πft2

Find the Area $87,025 \pi \mathrm { ft } ^ { 2 }$