Question 17
Mensuration of Plane ShapesPOR is a sector of a circle centre O, radius 4 cm. If PÔR = 30°, find, correct to 3 significant figures, the area of sector POR. [Take π = 22/7]
- A.4.19 cm2
- B.8.38 cm2
- C.10.5 cm2
- D.20.9 cm2
Show the answer and explanation
Answer: A (4.19 cm2)
Explanation
Area = 30/360 × 22/7 × 42 = 88/21 ≈ 4.19 cm2.