Mathematics

A circle has radius x cm. What is the area of a sector of the…

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{3pi x^2}{8} )
  • C.
    ( frac{5pi x^2}{8} )
  • D.
    ( frac{3pi x}{8} )
Correct Answer: Option B
Explanation

A = θ360 x πr2 = 135360 x π x x2 = (3πx2)/8