Home » XOY is a real sector of a circle center O of radius 3.5cm which subtends…

XOY is a real sector of a circle center O of radius 3.5cm which subtends…

XOY is a real sector of a circle center O of radius 3.5cm which subtends an angle of 144o at the center. Calculate, in term of ϖ, the area of the sector
  • A.
    1.4ϖcm2
  • B.
    2.8ϖcm2
  • C.
    4.9ϖcm2
  • D.
    9.8ϖcm2
Correct Answer: Option C
Explanation

Area of a sector (=frac{theta}{360}times pi r^2\
left(frac{144}{360}times pi times frac{3.5}{1} times 3.5right)cm^2 = 4.9pi cm^2)

Related:  Simplify 1(frac{1}{2} + 2frac{1}{3} times frac{3}{4} - frac{1}{2})