The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes ? (use ∏=3.14)

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A4.71 cm

B6.28 cm

C9.42 cm

D3.14 cm

Answer:

r = 1.5 cm 𝚹 = 240° = ∏/180 x 240 = 4∏/3 l= r𝚹 = 1.5 x 4∏/3 =6.28 cm

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