Question

Find the area of a semicircle ether enter an exact number or use 3.14 for pie and enter your answer as a decimal

Answer 1

(π/2)r²

Explanation:

The formula for the area of a circle of radius r is A = πr². Thus, the formula for the area of a semicircle of the same radius is A/2 = (π/2)r². For a numerical answer you'll need to specify the radius.

Note: π = Greek letter pi; "pie" is a dessert, inappropriate here. :)