Question

1. calculate the circumference and area of a circle. use 3.14 for π. a. radius = 3 cm

Explanation:

Step1: Recall circumference formula

The formula for the circumference of a circle is $C = 2\pi r$. Given $r = 3$ cm and $\pi=3.14$.
$C=2\times3.14\times3$

Step2: Calculate the circumference

$C = 18.84$ cm

Step3: Recall area formula

The formula for the area of a circle is $A=\pi r^{2}$. Given $r = 3$ cm and $\pi = 3.14$.
$A=3.14\times3^{2}$

Step4: Calculate the area

$A=3.14\times9 = 28.26$ $cm^{2}$

Answer:

Circumference: $18.84$ cm, Area: $28.26$ $cm^{2}$