Question

Will fan and medal!
Find the area of the regular pentagon below by using the area formula for triangles.

a = 2 inches and b = 4 inches

(i'll comment the picture)
*picture not drawn to scale
A.
5 in2
B.
40 in2
C.
8 in2
D.
20 in2

Answer 1

i am going towards B 40 in2

Answer 2

Alright, I'll go with that, ty!

Answer 3

np

Answer 4

there are 5 triangles each having base b and height a
area of 1 triangle = 0.5ab
area of 5 = 2.5ab = 2.5 * 2 * 4

Answer 5

- its not 40

Answer 6

So it's D. ?

Answer 7

do you follow the reasoning/

yes 20 D

Answer 8

I understand the problem now, thank you!

Answer 9

the area of a triangle = half of the base * height

Answer 10

yw