Question

hii every oneanswer this question
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Answer 1

Answer:

$area = 19.25 {cm}^{2}$

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Answer 2

Answer:

Area covered in 30 min = 19.25

Step-by-step explanation:

Given:

Radii = 3.5cm

Time = 30min

pi = 22/7

So:

Area covered by the hand in 60 min = circle with radii of length minute hand

Area covered by the hand in 60 min = 22/7 x 3.5^2

Area covered by the hand in 60 min = 22/7 x 12.25

Area covered by the hand in 60 min = 22 x 1.75

Area covered by the hand in 60 min = 38.5

Therefore area covered by hand in 30 minutes = 1/2 area of total circle ( 30 min= 1/2 x 60 min).

Area covered in 30 min = 1/2 x 38.5

Area covered in 30 min = 19.25