Radius of a semi circle

Mathematics

2 answers:

Ivahew [28]2 years ago

8 0

The area for semi circle is: (pi)(r^2)/2

A= 3.142 x (8.2)^2 / 2

A= 110.8 cm^2

bulgar [2K]2 years ago

6 0

A=3.142*r^2
Area of the circle= 3.142*8.2^2
=211.26
Because it’s a semicircle, divide by two.
211.26/2 = 105.6

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