The length of a minute hand of a wall clock is 8,4cm. Find the area swept by it in half an hour?
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r = 8.4 cm
in half hour, it cover half circle.
so area = (1/2)πr²
= (1/2)×(22/7)×8.4 = 13.2 cm²
in half hour, it cover half circle.
so area = (1/2)πr²
= (1/2)×(22/7)×8.4 = 13.2 cm²
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Solutions
We know that the length of a minute hand of a wall clock is 8,4cm.
Solve
half = 1/2
= (1/2)πr²
= (1/2)×(22/7)×8.4 = 13.2 cm²
We know that the length of a minute hand of a wall clock is 8,4cm.
Solve
half = 1/2
= (1/2)πr²
= (1/2)×(22/7)×8.4 = 13.2 cm²
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