IBPS SO Prelims Exam Model Paper 6

Given:
Cost of 1 square metre gardening = Rs.10
Formula used:
Area of circular field = π × (radius)2
Area of square field = (side)2
Calculation:
Area of square field =

2250

10

⇒ 225 m2
(Side)2 = 225
⇒ Side = 15 m
⇒ Side of square field = Diameter of circular field
⇒ 15 = 2 × (Radius)
⇒ Radius =

15

2

⇒ Area of circular field = π × (

15

2

)2
⇒ (

225π

4

)m2
∴ The area of the circular field is (

225π

4

)m2