Question

finding the circum find the circumference (in cm) of the circle 1) circle with radius 13.5 3) circle with radius 2 5) circle with radius 11 7) circle with diameter 2 4) partial circle 6) partial circle with 16 8) partial circle

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $r$ is the radius, or $C=\pi d$ where $d$ is the diameter. We use $\pi=3.14$.

Step2: Solve for circle 1

Substitute $r=13.5$ into $C=2\pi r$
$C=2\times3.14\times13.5=84.78$

Step3: Solve for circle 3

Substitute $r=2$ into $C=2\pi r$
$C=2\times3.14\times2=12.56$

Step4: Solve for circle 5

Substitute $r=11$ into $C=2\pi r$
$C=2\times3.14\times11=69.08$

Step5: Solve for circle 7

Substitute $d=2$ into $C=\pi d$
$C=3.14\times2=6.28$

Answer:

1. $84.78$ cm
2. $12.56$ cm
3. $69.08$ cm
4. $6.28$ cm