Described 45691

How big is the area of the circular cutout described by the minute hand 14 cm long in 40 minutes?

Correct answer:

S =  410.5014 cm2

Step-by-step explanation:

r=14 cm t1=40 min t2=1 h min=1 60  min=60 min  k=t2t1=6040=320.6667  S1=π r2=3.1416 142615.7522 cm2  S=k S1=0.6667 615.7522=410.5014 cm2

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