Question

One side of an equilateral triangle is 8 cm, then find its area using Heron's formula .
​

Answer 1

Step-by-step explanation:

semiperimeter = (8+8+8)/2 = 12cm

By herons formula,

$area \: of \: triangle \: = \sqrt{s(s - a)(s - b)(s - c)}$

area = √[12 ( 12 - 8 )^3]

= √768

= 27.71 cmsq.