Find the area of a regular decagon with an apothem of 3.8 in. and a side length of 2.5 in.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter5: Similar Triangles
Section5.CR: Review Exercises
Problem 34CR: Find the length of a diagonal of a square whose side is 4 in. long.
Question

 Find the area of a regular decagon with an apothem of 3.8 in. and a side length of 2.5 in.

 Find the length of the base of a rectangle if the height is 72 meters and the area is 288 m2

Find the height of a parallelogram if the area is 60 square feet and the base is 10 feet.

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