Question

The canopy of a parachute is a semicircle with a radius of 13 feet. A company that is making parachutes for a Fourth of July celebration wants each parachute to be made from equal parts of red, white, and blue fabric.
Approximately how much fabric of each color will be needed to make a single parachute canopy?
88.5 ft
88.5 ft²
265.5 ft
265.5 ft²

Answer 1

Answer

88.5 ft²

Explanation

The first step is the surface area of the semicircle.

Surface area of a circle = πr²

                                        = π × 13²

                                        = 530.929 ft²

Since the semicircle, we divide this by 2.

S.A of the parachute =  530.929/2

                                    = 265.4645 ft²

To get the fabric is needed for each color we divide this by 3.

Fabric needed for each color =  265.4645/3

                                                 = 88.488 ft²

To the nearest tenth, answer  = 88.5 ft²

Answer 2

The answer to your question would be 88.5ft2.