Find the area of equilateral triangle whose side 9 cm using heron's formula

asked Mar 10, 2020 114k views

0 votes

6.8k points

Please log in or register to add a comment.

6 votes

Answe
$\sqrt{3$ 81/4

Explanation:

s= 9+9+9/2 = 27/2

s-a= 27/2 - 9/1 = 9/2

s-b= 27/2-9/1=9/2

s-c = 27/2-9/1= 9/2

area=
$√(27/2*9/2*9/2*9/2) \\\ =sqrt{(3*9)/2 * 9/2 * 9/2 *9/2}$

=
$√(3) *81/4\\$

Ctwheels answered Mar 17, 2020

7.9k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.6m questions

11.2m answers