Question

If the perimeter of an equilateral triangle is 24 cm then find out its area

Answer 1

Step-by-step explanation:

answer is up

solution

Given, the side of an equilateral triangle is 24 cm. Also, semi perimeter s can be given as s=24+24+242=36cm. The formula for the area A for the equilateral triangle is √32(side)2 . So, the area will be √32(24)2=144√3cm2 .

Answer 2

Perimeter of Equilateral Triangle = 3s

3s = 24

s = 24/3

s = 8

Now, area of equilateral triangle = $\frac{\sqrt{3}}{4}s^2$

= $\frac{\sqrt{3}}{4}3^2$

≈ 3.89711

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