MCQ
If side of equilateral triangle is 25m. Its area is:
- A$5\sqrt{3}\text{ sq.cm}$
- B$\frac{625}{4}\sqrt{3}\text{ sq.cm}$
- C$54\sqrt{3}\text{ sq.cm}$
- D$\sqrt{3}\text{ sq.cm}$
✓
Answer
- $\frac{625}{4}\sqrt{3}\text{ sq.cm}$
Solution:
Arrea of equilateral triangle $=\frac{\sqrt{3}}{4}(\text{Side})^2$
$=\frac{\sqrt{3}}{4}(25)^2$
$=\frac{625\sqrt{3}}{4}\text{ sq.cm}$
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