SSC CHSL 2020 PYQ — Question 51

SSC CHSL - 16th October 2020 - Shift 2 • Quantitative Aptitude • Q51

The area of a square park is 16x2 + 8x + 1. What is the length of the park?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is Option 2 i.e (4x + 1) units.

Understanding/Application

Area of the square park = 16x2 + 8x + 1

Area of square = (side)2

16x2 + 8x + 1 = side2

(4x)2 + 2(4x)(1) + 12 = side2

(4x + 1)2 = side2

side = (4x + 1) units