Question 30
Mensuration of Plane ShapesA circle has radius x cm. What is the area of a sector of the circle with angle 135°, leaving the answer in terms of x and π?
- A.πx2/8
- B.3πx2/8
- C.5πx2/8
- D.3πx/8
- E.3πx/8
Show the answer and explanation
Answer: B (3πx2/8)
Explanation
Area = 135/360 × πx² = 3/8 × πx² = 3πx²/8.