1.

Find the perimeter of a sector of a circle if it's measure is 180 degree and radius is 7cm​

Answer»

ong>GIVEN :-

  • Central angle = 180°.
  • Radius of SECTOR of Circle = 7 CM.

TO FIND :-

  • The Perimeter of a sector of circle.

SOLUTION :-

As we know that the perimeter of a sector of circle is given by,

➠ Perimeter = 2πr × 360°/∅ + 2r

  • π = 22/7.
  • r = radius of sector of a circle.
  • ∅ = Central angle.

➠ Perimeter=2 × (22/7) × 7 × 360°/180° + 2 × 7

➠ Perimeter = 44/7 × 7 × 2 + 14

➠ Perimeter = 44 × 2 + 14

➠ Perimeter = 88 cm + 14

➠ Perimeter = 102 cm

Hence The Perimeter of a sector of circle is 102 cm.

ADDITIONAL INFORMATION :-

AREA of sector of Circle :-

➠ Area = πr² × 360°/∅

  • π = 22/7.
  • r = radius of sector of a circle.
  • ∅ = Central angle.


Discussion

No Comment Found

Related InterviewSolutions