3. The length of an arc of sector of angle 40° of a circle of diameter 7cm is
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Answer:
length of an arc is 2.44 cm
Step-by-step explanation:
length of an arc is = θ/360° × 2πr
= 40/360×2×22/7×7/2 because ( d=2r)
= 1/9×22
= 22/9cm
= 2.44cm
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