High School

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What is the approximate circumference of a circle with a diameter of 10 cm?

A. 20 cm
B. 31.4 cm
C. 62.8 cm
D. 100 cm

Answer :

Final answer:

To find the circumference of a circle with a diameter of 10 cm, use the formula C = π * d, which results in approximately 31.4 cm.

Option b is correct.

Explanation:

The question is asking to calculate the circumference of a circle when the diameter is given as 10 cm. The formula to calculate circumference (C) is C = π * d, where d represents the diameter of the circle, and π (pi) is a constant approximately equal to 3.14159.

Therefore, the circumference of the circle with a diameter of 10 cm is:

C = 3.14159 * 10 cm = 31.4159 cm.

Since we are looking for an approximate value, we round this to 31.4 cm, which corresponds to answer choice b.

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Rewritten by : Jeany