Question

Find the circumference of the circle with the given radius or diameter. (Use 3.14 for it.)

diameter = 25 ft
a 39.25 ft
b. 78.5 ft
C. 490.63 ft
d. 1,962.5 ft

Answer 1

The right answer is 78.5ft

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Answer 2

B. 78.5 feet

Explanation:

The circumference of a circle can be found using the following formula.

c=πd

We know that the diameter is 25 feet. We also know we are using 3.14 for pi.

d=25

π=3.14

Substitute these values into the formula.

c=3.14*25

Multiply the two numbers together

c=78.5

Add appropriate units. Circumference uses the same units as the diameter. The diameter is 25 feet, so the units are feet.

c=78.5 feet

The circumference of the circle is 78.5 feet, and the correct answer is B