Question

What is the area of the regular pentagon below?

Answer 1

two ways of doing this

Answer 2

sorry equation editors is being dumb anyways you know that every side of a pentagon has the same exact length correct?

Answer 3

so whats the formula for area of a pentagon?

Answer 4

you have to split it up into 6 triangles

Answer 5

you mean 4 triangles?

Answer 6

5 triangles i mean't lol

Answer 7

so whats the formula? if i have that i can solve it

Answer 8

Well here's a formula, I'm not sure if this is how your teacher want to solve it but


\[A=\frac{s^2n}{4tan(\frac{180}{n})}\]

Answer 9

where s = length of one side

n=the number of sides