find the length of the arc of the circle of diameter 7cm having area of the sector 3.85sq also find the measure of the arc
Answers
Answered by
1
Let the angle of centre made by the sector be θ
Therefore,
Area of the sector=πr
2
360
θ
=>3.85=
360
π(3.5)
2
θ
=>θ=
(3.5)
2
×22
3.8×360×7
=35.5
=36
Thus length of the arc =2πr
360
θ
=2×
7
22
×3.5×
360
36
=2.2cm
Similar questions