Area of Regular Polygons Answers

A regular pentagon is shown.

Which statements about finding the area of the equilateral triangle are true? Select three options.

A regular decagon has a radius of 8 cm.What is the approximate area of the decagon? Recall that a decagon is a polygon with 10 sides.

A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm.

A community pool that is shaped like a regular pentagon needs a new cover for the winter months. The radius of the pool is 20.10 ft. The pool is 23.62 ft on each side.To the nearest square foot, what is the area of the pool that needs to be covered?

A regular octagon has an apothem measuring 10 in. and a perimeter of 66.3 in.

Fiona must find the length indicated by the dotted line for the tiles she is installing. She knows that each polygon is a regular hexagon with a perimeter of 7.5 in.

A regular hexagon is shown.

Manuel wants to buy a window shade to cover the window and frame shown. The window is in the shape of a regular octagon.The radius of the window, including the frame, is 2 ft, and the measure of each edge of the octagonal frame is 1.52 ft.

A regular octagon has a radius of 6 ft and a side length of 4.6 ft.