# Find the Area of an Equilateral Triangle Having Each Side X Cm. - Mathematics

Short Note

Find the area of an equilateral triangle having each side x cm.

#### Solution

Area of an equilateral triangle, say A having each side a cm is given by

A = sqrt(3)/4 a^2

Area of the given equilateral triangle having each equal side equal to x cm is given by

a = x cm

A = sqrt(3)/4 (x)^2

A= (sqrt(3)x^2)/4 cm^2

Concept: Application of Heron’s Formula in Finding Areas of Quadrilaterals
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#### APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 17 Heron’s Formula
Exercise 17.3 | Q 5 | Page 24

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