RRB Assistant Loco Pilot and Technician Model Paper 4 with solutions

Let side of square = x cm
then area of the square = ${\mathit{x}}^2$ = 121
x = 11 cm
From Question
Perimeter of the square = Circumference of the circle
⇒ 4 × x = 2 π r (r = radius of the circle)
⇒ 4 × 11 = 2 × $\frac{22}{7}$ × r
⇒ r = 7
∴ Area of the circle = π × ${\mathit{r}}^2$ = $\frac{22}{7}\times 7^2$ = 154 sq. cm