RBI Grade B Officer (General / DEPR / DSIM) 2019 · Question 14 of 120

Length of a rectangular land is twice the radius of a circle of circumference 132 cm. The land area got increased by 144 sq.cm, when a square land is attached along the breadth of the rectangle. Find area of rectangle in sq.cm.

Quantitative Aptitude

AA. 1008
BB. 257
CC. 504Correct
DD. 756
EE. 1512 www.teachersadda.co.in | www.sscadda.com | www.bankersadda.com | www.adda247.com

Answer: C. C. 504

Explanation

let radius be r cm 132 = 2 × 7 𝑟⟹𝑟= 21 𝑐𝑚⇒𝑙= 42 𝑐𝑚 Let length, breadth of rectangle be l, b cm respectively Square is attached along breadth of rectangle, edge of square = b cm Increase in area = area of square 𝑏2 = 144 ⇒𝑏= 12 𝑐𝑚 Area of rectangle = 𝑙𝑏= 42 × 12 = 504 𝑐𝑚2

Source: RBI Grade B 2019 Phase-I recollected paper with answers and solutions (Adda247 compilation) · memory-based

Practice the full RBI Grade B Officer (General / DEPR / DSIM) 2019 paper

Timed test with all 120 questions, just like the real exam.

Start test