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Circumference (Level 2)
Question
Exam
The circumference of a circle is
18 picm. Find its diameter, in centimeters.
Answer
Attempt 2 out of 2

d=

cm
Submit Answer
6
Apr 14
3:03

Score: $0$ / $5$ $\newline$ Circumference (Level $2$ ) $\newline$ Question $\newline$ Exam $\newline$ The circumference of a circle is $18 \pi \mathrm{cm}$ . Find its diameter, in centimeters. $\newline$ Answer $\newline$ Attempt $2$ out of $2$ $\newline$ $d=$ $\newline$ $\mathrm{cm}$ $\newline$ Submit Answer $\newline$ $6$ $\newline$ Apr $14$ $\newline$ $3$ : $03$

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Circles: word problems

Full solution

Q. Score:

0

/

5

\newline

Circumference (Level

2

)

\newline

Question

\newline

Exam

\newline

The circumference of a circle is

18 \pi \mathrm{cm}

. Find its diameter, in centimeters.

\newline

Answer

\newline

Attempt

2

out of

2

\newline

d=

\newline

\mathrm{cm}

\newline

Submit Answer

\newline

6

\newline

Apr

14

\newline

3

:

03

Use Circumference Formula: To find the diameter, we need to use the formula for the circumference of a circle, which is $C = \pi d$ , where $C$ is the circumference and $d$ is the diameter.
Set Up Equation: We know the circumference is $18\,\text{picm}$ , so we can set up the equation $18 = \pi d$ .
Solve for Diameter: To solve for $d$ , we divide both sides of the equation by $\pi$ , so $d = \frac{18}{\pi}$ .
Calculate Approximation: Using a calculator, we find that $18$ divided by $\pi$ is approximately $5.73$ .

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\newline

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