Density and Design Problems Answers

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

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

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.

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 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.

The area of the regular octagon is approximately 54 cm2.

A regular pentagon is shown.

The area of the regular hexagon is 10.4 in.2.

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

The base of the right triangle drawn in the regular octagon measures 0.7 cm.