NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 9: Perimeter and Area - Problems and SolutionsQuestion 98
Class 7 - Mathematics - Unit 9: Perimeter and Area - Problems and Solutions
Question. 98
Answer:
308 cm²
Detailed Answer with Explanation:
Outer radius = 14 cm, inner radius = 7 cm.
Area = \(\pi(R^2 - r^2) = \pi(196 - 49) = 147\pi ≈ 308 cm^2\).