Question

if the perimeter of an equilateral triangle is 100cm .what will be it's area​

Answer 1

Answer:

(25√3)/9

Step-by-step explanation:

Given :

Perimeter = 100cm

perimeter of an equilateral triangle = a + a + a = 3a

Therefore,

• 3a = 100
• a = 100/3

Area Of An Equilateral triangle =

(√3/4) × a²

• √3/4 × 100/3 × 100/3
• (25√3)/9