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The length of the minute hand on a clock is 5 inches, representing the radius. What is the approximate circumference of the clock?

A. 15.7 inches
B. 31.4 inches
C. 47.1 inches
D. 62.8 inches

Answer :

Final answer:

The approximate circumference of the clock is 31.4 inches. Therefore the correct answer is: b)

Explanation:

To find the circumference of the clock, we can use the formula C = 2πr, where r is the radius of the clock.

Given that the length of the minute hand is 5 inches, which represents the radius, we can substitute this value into the formula to find the approximate circumference:

C = 2π(5) ≈ 10π ≈ 31.4 inches.

Therefore, the approximate circumference of the clock is 31.4 inches.

The circumference of a circle is the distance around its outer edge or boundary.

It is calculated using the formula:

C=2πr

where:

C is the circumference,

π is a mathematical constant (approximately equal to 3.14159),

r is the radius of the circle.

Alternatively, you can also use the formula in terms of the diameter (d):

C=πd

These formulas express the relationship between the circumference, radius, and diameter of a circle.

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Rewritten by : Jeany

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