Semicircle arc AB,AC,BD and CD divide the circle above in to regions. The points shown along the diameter AD divided in to 6 equal parts. If AD=6 what is the total area of the shaded region?

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asked Jan 6, 2015 81.3k views

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Semicircle arc AB,AC,BD and CD divide the circle above in to regions. The points shown along the diameter AD divided in to 6 equal parts. If AD=6 what is the total area of the shaded region?

Semicircle arc AB,AC,BD and CD divide the circle above in to regions. The points shown-example-1

Mathematics
high-school

Dat TT asked

by Dat TT

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Area semicircle = π *
r^(2) / 2;

the total area of the shaded region = 2 * [ π* (
BD / 2)^(2)

/ 2 - π* (
CD / 2)^(2)

/ 2 ] = 4π - 1π = 3π.

Loreta answered Jan 11, 2015

by Loreta

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