the length of a minute hand of a clock is 20 m m find the distance covered by the trip of the minute hand in half an hour
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Answered by
16
Answer:
62.85 cm
Step-by-step explanation:
In 1hr it completes 1 rotation
In 30min it completes half the rotation
So, distance travelled in 30min is
Length of minute hand is 20cm therefore r=20cm
= 2πr/2
=2× 22/7 × 20/2
=440/7
=62.85 cm
The distance travelled by the minute hand in half an hour is 62.85cm
Answered by
2
answer
given,
the length of a minute of a clock =20 millimetre
a/q
1/2×πr
=1/2×2×3.14×20
=3.14×20
=62.8
therefore , the distance covered by the tips of the minutes hand in half an hour = 62.8 mm
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