the minute hand of a clock is 21 cm long the distance moved by the tip of the minute hand in 1 hour is
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9
Hey buddy here's your answer . The minute hand will become the radius and it moves in circular direction in one hour so distance travelled by tip of minute hand = 2pi x r= 2*22/7*21=132 cm . Hope you like my answer
Answered by
31
【 Notice that the minute hand of the clock acts as the radius of a circle,
So we just need to find it's circumference to get the distance travelled by the minute hand in one hour 】
Minute Hand = Radius = 21 cm
∴ Distance travelled by the minute hand in one hour
= Circumference of Circle
= 2Πr 【∵Π = 22 / 7 or 3.14】
= [ 2 × 22 / 7 × 21 ] cm
= [ 2 × 22 × 3 ] cm
= 132 cm
Hence, the tip of the minute hand will travel 132 cm for covering a distance of one hour
✪ Be Brainly ✪
So we just need to find it's circumference to get the distance travelled by the minute hand in one hour 】
Minute Hand = Radius = 21 cm
∴ Distance travelled by the minute hand in one hour
= Circumference of Circle
= 2Πr 【∵Π = 22 / 7 or 3.14】
= [ 2 × 22 / 7 × 21 ] cm
= [ 2 × 22 × 3 ] cm
= 132 cm
Hence, the tip of the minute hand will travel 132 cm for covering a distance of one hour
✪ Be Brainly ✪
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