SOLUTION: Find the area of a regular pentagon with sides 7 millimeters long and apothem 4.8 mm long. (A=1/2aP) Please help

Question 161346: Find the area of a regular pentagon with sides 7 millimeters long and apothem 4.8 mm long. (A=1/2aP) Please help
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

Okay, you've given the ---------> EQN 1
where ;
This is a formula in finding the Area for a RIGHT triangle. Good Start! We know too the side is cut into half extending a line to the center (apothem) to make the triangle right? So we'll use to EQN 1.
.
Now,
, ONLY for 1 triangle, but there are triangles in a regular pentagon. So,
ANSWER
* See www.math-prof.com
Thank you,
Jojo
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