Question

find the area of an equilateral trangle having the length of a side equals 10c.m.

Answer 1

a = 10cm
Area = √3/4 a^2
= √3/4 X 10 X 10
= √3/4 X 5 X 5
= 25√3/4 cm^2

Answer 2

Heya Frnd.........☺

Side of the equilateral triangle = 10
Now,

We know that area. of eq. Tri. =
$\frac{ \sqrt{3} }{4} {a}^{2}$

I. e. , root 3/ 4 × 100

= 43.30 cm^2........ANS

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