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?

Question

crisforp · Answer

Area semicircle = π * r 2 /2 ; 
 the total area of the shaded region = 2 * [ π* ( B D /2 ) 2 / 2 - π* ( C D /2 ) 2 / 2 ] = 4π - 1π = 3π.

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?

Answer (1)

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