Question

Find the area of a regular pentagon with an apothem of 3.1ft and a side length of 4.5ft. Round your answer to the nearest whole number

Answer 1

Answer:

≈ 35 ft²

Step-by-step explanation:

The area (A) of a regular pentagon is

A = $\frac{1}{2}$ × perimeter × apothem

perimeter = 5 × 4.5 = 22.5 ft, thus

A = 0.5 × 22.5 × 3.1 = 34.875 ≈ 35 ft²