Question

The area of an equilateral triangle whose side is 5cm is equal to

Answer 1

area of an equilateral triangle =√3/4side^2
=√3/4*(5)^2
=√3/4*25
=10.2cm^2

Answer 2

Area of equilateral triangle:

$\boxed { \textbf {Area = }\dfrac{\sqrt{3}}{4} \times (\text{sides})^2 }$

.

$\text {Area = }\dfrac{\sqrt{3}}{4} \times (\text{5})^2 = \dfrac{25\sqrt{3}}{4} = 10.83 \text { cm}^2$

.

Answer: Area = 10.83 cm²