SSC CPO 2022 PYQ — Question 127

The correct answer is option 4 i.e. 40$\sqrt2$ cm².

sides of the triangle a = 10 cm, b = 12 cm, and c = 18 cm

S = (a + b + c)/2 = (10 + 12 + 18)/2 = 40/2 = 20

A = $\sqrt{S(S-a)(S-b)(S-c)}$

A = $\sqrt{20\times10\times8\times2}$

A = 40$\sqrt2$ cm².