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Area of an equilateral triangle is493\sqrt33​​ Find the side of the triangle.
Question

Area of an equilateral triangle is493\sqrt3​ Find the side of the triangle.

A.

16 cm

B.

14 cm

C.

18 cm

D.

12 cm

Correct option is B

Given:

The area of the equilateral triangle is493cm2{ 49\sqrt{3} cm}^2​.
Formula Used:
Area of an equilateral triangle = 34×side2\frac{\sqrt{3}}{4} \times \text{side}^2 ​​
Solution:
Let the side of the triangle = s .

34×s2=493\frac{\sqrt{3}}{4} \times s^2 = 49\sqrt{3} ​​


14×s2=49\frac{1}{4} \times s^2 = 49 ​​

s2=196 s^2 = 196 ​​
s = 14 cm
Thus, the side of the equilateral triangle is 14 cm.

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