Leadership

Mathematics

Test your understanding of this lesson Area and perimeter of sector of a circle:-

1)
The area of the quadrant of a circle of diameter 14cm where \(\pi=\frac{22}{7}\) is
  • 77 sq.cm
  • 7.7sq.cm
  • 37.5 sq.cm
  • 38.5 sq.cm
2)
OAB is a sector of a circle with centre O in which length of chord AB =radius of the circle = 10cm,the area of the sector OAB \((\pi=3.144)\)=
  • 52.4 sq.cm
  • 51.4 sq.cm
  • 52.6 sq.cm
  • 50.4 sq.cm
3)
An arc subtends an angle \(15^{0}\) at the centre. If the radius of the circle is 36 cm and \(\pi=3.14\),length of the arc=
  • 8.42cm
  • 9.42cm
  • 9.42 sq.cm
  • 9.28 sq.cm
4)
An arc subtends an angle of \(12^{0}\) at the centre of a circle of radius 21 cm.It covers a sector then the remaining part of the circle where \(\pi=\frac{22}{7}\), is
  • 46.2 sq.cm
  • 1340.8 sq.cm
  • 1339.8 sq.cm
  • 462 sq.cm
5)
An arc subtends \(120^{0}\) at the centre, it divides the total circumference into equal parts of
  • 6
  • 4
  • 3
  • 12
Hand draw

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