Question

Find the area of the regular pentagon. 5.5 cm 8 cm

Answer 1

Answer:

Area = 110 cm²

Step-by-step explanation:

You can find the area of a regular pentagon by finding the area of one of the triangles created by its central angle and multiplying it by 5.

1. Use the formula for the area of a triangle to find the area of the triangle formed by its central angle.

$A = \frac{1}{2} bh\\\\A = \frac{1}{2}8(5.5)\\\\A = \frac{1}{2}44\\\\A = 22$

2. Multiply this area by 5 to get the area of the entire pentagon.

A = 22(5)

A = 110