Question

Find the area of an equilateral triangle (regular 3-gon) with the given measurement.

9-inch perimeter

A = sq. in

My answer needs to be in square root.

Answer 1

if it has a nine in perimeter with equal sides, then each side is 3 in

Answer 2

formula is A= 1/2 bh (one half base times height)

Answer 3

base is 3 in

Answer 4

but i cant think of how to figure out height

Answer 5

height is 2.598 using this calculator:
http://rechneronline.de/pi/equilateral-triangle.php

Answer 6

so what is the answer?

Answer 7

I sthe perimeter is 9 then it's side isd 3. Using the Heron's Formula the area is

Answer 8

Just a minute

Answer 9

\[\sqrt{1944}\]

Answer 10

Probably

Answer 11

A=3.897

Answer 12

sq. in

Answer 13

i dont get it

Answer 14

@kah.x

Answer 15

in the answer there has to be 3 letters the sqrt and one more letter

Answer 16

then*

Answer 17

oh, one sec

Answer 18

let me draw it for you

Answer 19

like this