Question

A regular pentagon has an apothem of 3.2 m and an area of 37.2 m². What is the length of one side of the pentagon?

Answer 1

area will be = 8(l*a)/2 ---- where l is lenght of side and a is the apothem
- so than 37,2 = 8(l*3,2)/2
37,2=4(l*3,2)
37,2=12,8*l

l= 37,2/12,8 =372/128 =2,9 m

Answer 2

sorry a have maked the calcules for octogon
- so than will be 37,2 =5(l*3,2)/2
37,2=16l/2
37,2=8l
l=37,2/8 =4,65 m this is right sure

Answer 3

ok ?