SarkariPYQ

SSC Selection Post 2019 PYQ — Question 52

SSC Selection Post - Graduation Level 2019 - 16 Oct 2019 • Quantitative Aptitude • Q52

Back to paper

The sides of a triangular park are 36m. 105m and 111m. What is the cost of levelling the park at ₹8.40 per m²?
 

Show answer & explanation

Correct answer: A

Explanation

The correct answer is Option 1 i.e.₹15876.

Semi - perimeter = 36+105+1112=126\frac{36 + 105 + 111}{2} = 126

Area = 126(126−36)(126−105)(126−111)\sqrt{126(126 - 36)(126 - 105)(126 - 111)} \\

=126×90×21×15=1890= \sqrt{126 \times 90 \times 21 \times 15} = 1890 m2

Cost= 1890 × 8.40 = ₹15, ⁣876