On a stopwatch, the tip of the second hand moves 2 cm in 15 seconds

Mathematics

2 answers:

lesya [120]3 years ago

8 0

Answer:

B) 1.3 cm

Step-by-step explanation:

Agata [3.3K]3 years ago

7 0

The given 2 cm is the length of the arc that the second hand had traveled for 15 seconds. Since the second hand completes a whole revolution in 60 seconds, it traveled approximately 1/4 of its circumference for 15 seconds. The length of the second hand is the radius of the circle.
2 cm = (1/4) x 2π x (L)
Solving for L gives an answer of 1.273 cm. Thus, the answer is the second choice, 1.3 cm.

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