The length around the outside of semicircle o from point l through point m to point n is 14 centimeters. the perimeter of semicircle o is about 22.92 centimeters. what is the approximate area of semicircle o? use 3.14 for . a. 41.83 square centimeters b. 83.67 square centimeters c. 62.46 square centimeters d. 31.23 square centimeters reset

The area would be 83.67 cm.

A semicircle is half of a circle.  The perimeter of the semicircle would be half of the perimeter (circumference) of the entire circle.  The formula for circumference is:

C=πd

Using our information, we have  

22.92 = 0.5(3.14)d
22.92 = 1.57d

Divide both sides by 1.57:

22.92/1.57 = 1.57d/1.57
14.6≈d

Since the diameter is 14.6, the radius is 14.6/2 = 7.3.

We use the radius for the area of the semicircle:

A=0.5πr²
=0.5(3.14)(7.3)²
=83.67

6(2x + 5y)6 (2x) = 12x6 (5y) = 30y12x + 30y