Question
a regular pentagon has an apothem of 3.2 and an area of 37.2 cm. What is the length of one side of the pentagon?
Answers
Reiny
area of one triangle = 37.2/5 = 7.44 cm
area = (1/2)base x height
7.44 = (1/2)(base)(3.2)
base = 2(7.44)/3.2)
= ...
area = (1/2)base x height
7.44 = (1/2)(base)(3.2)
base = 2(7.44)/3.2)
= ...
Steve
Or, using the formula area = 1/2 * apothem * perimeter,
that will give you the perimeter. 1/5 of that will be the side length.
that will give you the perimeter. 1/5 of that will be the side length.
Anonymous
the answer is 4.65 because I took the quick check and it was right.
E
1: 45°
2: 67.5°
3 (this one): 4.65 m
4: 288 cm²
5: 150sqrt3 in.²
2: 67.5°
3 (this one): 4.65 m
4: 288 cm²
5: 150sqrt3 in.²
brook
@E is 100% correct :)
luna
@E is correct
Banshee
Still comes in clutch after many years
Im here doing school while your already in your 20s damn
Im here doing school while your already in your 20s damn