A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded to the nearest tenth? 13.8 cm2 17.3 cm2 32.7 cm2 69.0 cm2plz dont ask for a pic i cant put one
Accepted Solution
A:
Answer: n = 5 a = 4.35926 cm r = 3 cm R = 3.7082 cm A = 32.6944 cm²= 32.7 cm² P = 21.7963 cm x = 108 ° y = 72 °
Agenda: r = inradius (apothem) R = circumradius a = side length n = number of sides x = interior angle y = exterior angle A = area P = perimeter π = pi = 3.14159... √ = square root