Solution
Let side of equilateral triangle = $$s$$ cm
=> Area = $$\frac{\sqrt3}{4} s^2=25\sqrt3$$
=> $$\frac{s^2}{4}=25$$
=> $$s^2=25\times4=100$$
=> $$s=\sqrt{100}=10$$ cm
=> Ans - (A)
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
