Find the area of the shaded region.

Geometry Level 1

The shaded region of the figure above is bounded by two concentric circles whose radii are 10 and 8. Find the area of the shaded region.

36 π 36\pi 48 π 48\pi 52 π 52\pi 112 π 112\pi

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1 solution

Hana Wehbi
Feb 10, 2018

The larger circle has an area 100 π 100\pi

The smaller circle has an area of 64 π 64\pi

Thus, the area of the ring or the annulus is 100 π − 64 π = 36 π 100\pi - 64\pi= 36\pi

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