The minute-hand of a clock is 6 cm long. How far does the end of the hand travel in
35 minutes?​

the clock moves circular in motion. the area of circumference=2 pie r. u substitute the values, 2*22/7*6=37.7cm now,degrees covered in 35mins, convert one minute to seconds and divide it by 360.(360/60=6) and the multiply 6*35mins=210degrees in 35mins. so next u look for distance covered in 1degree first and then multiply it by the degrees u got earlier e.g 37.7cm/360=0.1047 that is(1degree) so u multiply it with the degrees u got which is 0.1047*210=21.987 approximately 22cm.

hope it's helpful

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m∠a is 90°

m∠b is 40°