Question

Find the area of the shade regions. Give your answer as a completely simplify exact value in terms of pie(no approximation). a=

Answer 1

41.87 cm²

Explanation:

Area of shaded region :

• Area (sector of radius 7 cm) - Area (sector of 3 cm)
• π × θ/360° (r₁² - r₂²)
• 3.14 x 120/360 (49 - 9)
• 3.14 x 1/3 x 40
• 125.6/3
• 41.87 cm²