Question

The length of the minute hand of a clock is 7 cm. The area swept by the

minute hand in 15 minutes is :

(A)

2

77

cm

2

(B)

3

154

cm

2

(C)

2

49

cm

2

(D)

3

170

cm

2​

Answer 1

Answer:

Correct option is

A

77

For a minute hand, 60 minutes is equivalent to 3600 and so 30 minutes will be 1800.

Area swept in 60 minutes is area of full circle.

So area swept in 30 minutes will be area of half circle.

Thus, area swept = 21×(722)×72=77cm2

Explanation:

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Answer 2

Explanation:

d.) 3

170

CM

2

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