SSC CPO 2019 PYQ — Question 120

SSC CPO Tier I - 11th December 2019 - Shift 1 • Quantitative Aptitude • Q120

A field is in the shape of a trapezium whose parallel sides are 200 m and 400 m long, whereas each of the other two sides is 260 m long. What is the area (in m2) of the field?

Show answer & explanation

Correct answer: C

Explanation

The correct answer is option 3 i.e. 72000

Understanding

Parallel sides are 200 m and 400 m long, whereas each of the other two sides is 260 m long.

Area of trapezium = 1/2 × (Sum of length of parallel sides) × Height

Application

 

In the figure,

Height of trapezium = DE = CF

In triangle AED:

DE = √[(260)2 – (100)2] = √57600

DE = 240 cm

Hence,

Area of field = 1/2 × (200 + 400) × 240

= 72000 m2