SOLUTION: find the area of a semi-circle of radius 7cm(π=22/7)

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: find the area of a semi-circle of radius 7cm(π=22/7)      Log On


   



Question 1161543: find the area of a semi-circle of radius 7cm(π=22/7)
Answer by ikleyn(52752) About Me  (Show Source):
You can put this solution on YOUR website!
.

It is  %281%2F2%29%2Api%2Ar%5E2 = %281%2F2%29%2A%2822%2F7%29%2A7%5E2 = 11*7 = 77 cm^2.