Three horses are tied at three verticals of a triangular field, each with 7 m long rope. What is the total area grazed by the horses?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 77 m2.
Given:
Radius = 7 cm
Formula used:
Area of sector of a circle = (θ/360) × πr2 ----- (1)
Calculations:
Total angle of a triangle = 180°
Using equation (1), we get
⇒ Area of the required field = (180/360) × (22/7) × 7 × 7
⇒ (1/2) × 22 × 7
⇒ 11 × 7 = 77 m2