Problema Solution

if a regular pentagon with 15 centimeter sides has an approximate area of 387 centimeters squared what is the length of the apothem to the nearest hundredth?

Answer provided by our tutors

area=perimeter*apothem/2

since pentagon has 5 sides, its perimeter is 5*15=75

so the equation is

387=75*apothem/2

apothem=2*387/75=10.32

answer 10.32