Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

What is the area of an equilateral triangle whose each sides is 12 cm?

Options:

$36\sqrt{3} \,\,cm^2 $

$38\sqrt{3} \,\,cm^2 $

$34\sqrt{3} \,\,cm^2 $

$40\sqrt{3} \,\,cm^2 $

Correct Answer:

$36\sqrt{3} \,\,cm^2 $

Explanation:

The side of equilateral triangle = 12 cm

We know that the area of a equilateral triangle = \(\frac{\sqrt {3}}{4}\) × (side)2  

= \(\frac{\sqrt {3}}{4}\) × (12)2

= $36\sqrt{3} \,\,cm^2 $