SSC CGL 2022 PYQ — Question 69

The correct answer is option 4 i.e. 100√3 cm².

Side, a = 20 cm

Area of equilateral triangle = ${\sqrt{3} \over 4} a^2$    ....(i)

Using the given value in equation (i), we get

Area = ${\sqrt{3} \over 4} \times (20)^2$ = $100 \sqrt{3}$ cm² .