2 Answers

Jerry Green · Answer 1 · 2019-07-01T23:17:54+0000

Answer:

(D) is correct

Explanation:

Given: A circle with diameter 8.4 centimeters.

To find: The circumference of the given circle.

Solution: It is given that a circle has a diameter of 8.4 cm, therefore radius of the circle will be:

R=(D)/(2)=(8.4)/(2)=4.2 cm .

Now, the circumference of the circle is given as:

$C=2{\pi}r$

Substituting the given values, we have

$C=2{\pi}(4.2)$

$C=8.4{\pi} cm$

Thus, the circumference of the circle will be
$8.4{\pi} cm$ .

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