Question

Calculate the area of the regular pentagon below:

A regular pentagon with side length of 17.6 inches and dotted line from center to middle of side of 12.1 inches.

106.48 square inches

366.025 square inches

451.78 square inches

532.4 square inches

Answer 1

Th epentagon is made up of 5 triangles

each has a base of 17.6 and a height of 12.1


the area of a triangle is given by A= h*b/2

so find 1 triangle area and then multiply by 5

Answer 2

got pic?

Answer 3

@jdoe0001 Pic is above (in first reply)

5 equal triangles as shown

Use the equation for area of triangle that I gave in my first reply, then m ultiply area of 1 triangle by 5 to get the answer