SSC MTS 6 Aug 2019 Shift 3 Paper

Height of the equilateral triangle = 20√2
⇒ (√3/2) side = 20√2
⇒ Side = (40√2)/√3 cm
⇒ Area of equilateral triangle = (√3/4) side${}^2$ = (√3/4) × [(40√2)/√3]${}^2$
⇒ Area of equilateral triangle = 800√3/3 cm${}^2$
∴ Area of equilateral triangle is 800√3/3 cm${}^2$.