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