2020 · Q99
What is the approximate area of the shaded region in the figure given?
Elementary MathematicsMensuration
- A15.3 cm²
- B25.5 cm²
- C28.4 cm²
- D30.5 cm²
Explanation
The circle's diameter is the rectangle's diagonal √(64 + 36) = 10 cm, so its area is 25π ≈ 78.5 cm². The rectangle's area is 48 cm². The uncovered part is 78.5 − 48 = 30.5 cm².