The minute hand of a clock is 14cm long.What distance does the tip of the hand travel in an hour.What area does it sweep in half an hour.
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Answered by
6
Answer:
distance covered=88cm
area covered=308 sq.cm
Step-by-step explanation:
Given: radius r=14cm
distance covered by the tip in 1 hr= circumference of the clock
therefore , circumference= 2πr= 2×22/7×14
=88cm
area swept in half hr= half the area of clock
= 1/2×π×r×r=1/2×22/7×14×14
=22×14=308 sq.cm
Answered by
2
Step-by-step explanation:
Length of min. Hand = 14cm = 0.14m
# therefore radius is 0.14 m
# pi= 22/7 = 3.14
# area covered by tip in an hour
= pi r^2
= 22/7 ×0.14 × 0.14
=0.0616 m^2
#area covered in half an hour
=0.0616/2
=0.0308 m^2
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