Question

If the biggest hand of a clock is 15 cm long then the distance covered by it in 40 minutes will be
A. 31.5 cm
B. 72.8 cm
C. 24.1 cm
D. None​

Answer 1

Answer:

D. none is the correct option

Step-by-step explanation:

The biggest hand of a clock = r = 15cm

In a clock round there are, 12 hours * 60 mins = 720 mins

Now, 40 mins = 1/18 th part of it (40/720)

In total circumference of clock, it covers 1/18 part.

The distance covered = $\frac{1}{18} \times(2 \pi \times r) \\\\\implies \frac{3.14 \times 15 }{9} = 5.23 cm$

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Answer 2

Answer:

the answer to this question is option D

None of these

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