Question

What is the approximate area of a semicircle with radius of 21 ft? Use 3.14

Answer 1

692 ft^2

Explanation:

Area of a circle = (pi)(radius)^2

Here,

Area of the circle = (3.14)(21 ft)^2 = 1385 ft^2

Area of half this circle = area of the semicircle = 1385 ft^2 / 2, or

Area of semicircle = 692 ft^2