find the length of the arc of a circle of diameter 42 cm which subtend an angle of 60 degree at the Center.
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Answered by
156
d=42cm
r=1/2d
=1/2*42
r=21cm
angle=60°
l=subtended angle/360×2πr
l=60/360×2×22/7×21
l=1/6×2×22×3
l=132/6
l=22cm
the length of an arc is 22cm
r=1/2d
=1/2*42
r=21cm
angle=60°
l=subtended angle/360×2πr
l=60/360×2×22/7×21
l=1/6×2×22×3
l=132/6
l=22cm
the length of an arc is 22cm
Answered by
85
The length of the arc of a circle = 22 cm.
Step-by-step explanation:
Given,
The diameter of circle (d) = 42 cm and subtend an angle(Ф) = 60°
To find, the length of the arc of a circle = ?
∴ The radius of circle (r) = cm = 21 cm
We know that,
The length of the arc of a circle =
= 22 cm
Hence, the length of the arc of a circle = 22 cm.
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