98 cm²
- Step-by-step explanation:
A(parallelogram) = PR×CD
252cm² = PR×18cm
PR = 252cm²/18cm
= 14 cm
PR = diameter => radius = d/2 = 14cm/2 = 7 cm
A(circle) = π×r²
= 22/7 × (7cm)²
= 22/7 × 49cm²
= 154 cm²
A(shaded) = A(parallelogram) - A(circle)
= 252cm² - 154cm²
= 98 cm²
