jlgdr wrote:
Attachment:
Untitled.png
The rectangular region above contains two circles and a semicircle, each with a radius of 7. If 22/7 is used as an approximation for π, then the area of the shaded region is approximately
(A) 105
(B) 210
(C) 380
(D) 385
(E) 405
Area of 2 Circles = 2*[22/7 * 7 * 7] = 2 * 154 = 308
Area of semicircle = 1/2 * [ 154 ] = 77.
Total Area of 2 circles + Semicircle = 308 + 77 = 385
Area of Rectangle = 35 * 14 = 490
Area of shaded region = 490 - 385 = 105
Option A
Hope it is clear
Cheers
Qoofi
_________________
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