Question

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?

Answer 1

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