what is the perimeter of a sector of a circle whose Centre angle is 90 degree and radius is 7 centimetres
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Given,
Theta = 90°
Radius, r = 7 cm
• Perimeter of the sector = (theta/360°) × 2πr + 2r
= (90°/360°) × 2 × (22/7) × 7 + (2 × 7)
= 11 + 14
= 25 cm
Theta = 90°
Radius, r = 7 cm
• Perimeter of the sector = (theta/360°) × 2πr + 2r
= (90°/360°) × 2 × (22/7) × 7 + (2 × 7)
= 11 + 14
= 25 cm
jayesh1233:
what is a formula of perimeter
I think 0/360*2*22/7 *7
0 is equal to theta
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