A circle has radius x cm. What is the area of a sector of the...
MATHEMATICS
WAEC 1994
A 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. \( \frac{\pi x^2}{8} \)
- B. \( \frac{3\pi x^2}{8} \)
- C. \( \frac{5\pi x^2}{8} \)
- D. \( \frac{3\pi x}{8} \)
Correct Answer: B. \( \frac{3\pi x^2}{8} \)
Explanation
A =?360 x πr2 =135360 x π x x2 = (3πx2)/8
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