Question

What is the area of an equilateral triangle whose side is 10 cm?

Answer 1

Area of equilateral triangle is

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

Where a is side

Here a = 10 cm

So area is

$\frac{ \sqrt[]{3} }{4} \times 10 \times 10 = 25 \sqrt{3}$

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Answer 2

Question :–

What is the area of an equilateral triangle whose side is 10 cm?

Given :–

• Side = 10 cm.

To Find :–

• Area of an equilateral triangle.

Formula :–

$→ \boxed{\tt\blue{ \dfrac{\sqrt{3}}{4} \times {side}^{2} }} ←$

Solution :–

$→ \dfrac{\sqrt{3}}{4} \times {10}^{2}$

$→ \dfrac{\sqrt{3}}{\cancel{4}} \times \cancel{100}$

$→ \sqrt{3} \times 25$

$→ \boxed{\sf \red{25 \sqrt{3}}}$

Hence,

The area of an equilateral triangle $→ \boxed{\sf \green{25 \sqrt{3} \: {cm}^{2}}}$