Question

the minute hand of a circular clock is 14 cm long how far does the tip of the minute hand move into has( taken pi= 3.14)

Answer 1

Q: The minute hand of a circular clock is 14 cm long. How far does the tip of the minute hand move in 2 hour ?

Solutions :-

Given :
Length of the minute hand = r = 14 cm

Find the distance covered by minute hand in one hour :-

Circumference of circle = 2πr units
= 2 × 22/7 × 14 cm
= 88 cm

Distance covered in 2 hours = Distance covered in one hour × 2
= (88 × 2) cm
= 176 cm


Hence,
The distance covered by minute hand in one hour = 176 cm

Answer 2

ANSWER:

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The minute hand of the circular clock is 14cm long.

As the shape of the clock is circular in shape the minute hand will be considered as the radius of the circle.
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So the question is:How far does the tip of the minute hand moves into and so for that we are first supposed to find the distance which will be covered by the minute hand in a period of one hour.
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We will first find the circumference of the circle as we are asked to find how far does the minute hand moves into,and so if we will consider a circle made of wire and open it in a straight line the area will be the circumference of the circle and same is with this question, we are asked to find that length.
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$circumference \: of \: the \: circle = 2\pi \: r \\ circumference \: of \: the \: circle = 2 \times \frac{22}{7} \times 14........radius \: of \: the \: circle \: is \: \: the\: miute \: hand \: which \: is \: 14cm \\ circumference \: of \: the \: circle = 2 \times 22 \times 2........dividing \: 14 \: by \: 7 \\ circumference \: of \: the \: circle = 88cm$
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Now the distance which the minute hand will cover in 2hrs respectively will be the double of the distance travelled by the minute hand in one hour.
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$distance \: covered \: in \: two \: hours \: = 2 \times distance \: covered \: in \: one \: hr \\ distance \: covered \: in \: 2hrs = 2 \times 88cm = 176$
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Therefore,
the distance covered by the minute hand in a single hour =176cm