MCQ
The area of an equilateral triangle with sides $2\sqrt3\text{cm}$ is:
- A5.196cm2
- B0.866cm2
- C3.496cm2
- D1.732cm2
✓
Answer
- 5.196cm2
Solution:
Given: Side $=2\sqrt3\text{cm}$
We know that, area of equilateral triangle $=\bigg(\frac{\sqrt3}{4}\bigg)\text{a}^2$ square units.
$=\bigg(\frac{\sqrt3}{4}\bigg)(2\sqrt3)^2=\bigg(\frac{\sqrt3}{4}\bigg)(12)$
$=3\sqrt3=3(1.732)=5.196\text{cm}^2$
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