Find the area swept by a clock’s minute hand in one hour. The length of the minute hand is 10.2 cm. What is area swept in 30 minutes and 2 hours by same hand?
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Answer:
326.69 cm²
163.35 cm²
653.38 cm²
Step-by-step explanation:
r= 10.2 cm
area of circle= full sweep
- A= πr²= 3.14*10.2²= 326.69 cm²- this is for 1 hr
- Area swept in 30 min= 326.69 cm²/2= 163.35 cm²
- Area swept in 2 hrs= 326.69 cm²*2= 653.38 cm²
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