NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 9: Perimeter and Area - Problems and SolutionsQuestion 110
Class 7 - Mathematics - Unit 9: Perimeter and Area - Problems and Solutions
Question. 110
Circular pond surrounded by path width 2 m. Outer circumference = 44 m.
Answer:
31.43 m, 75.43 m²
Detailed Answer with Explanation:
Outer radius = 7 m, inner radius = 5 m.
Inner circumference = 2π × 5 ≈ 31.43 m.
Path area = π(7² − 5²) = 75.43 m².