Question

find the surface area of this cylinder. use 3.14 for π. do not round your answer. 3 cm 6 cm area of a circle a = πr² what is the area of both circles? both circles: ?cm²

Explanation:

Step1: Recall circle - area formula

The area of a single - circle is given by $A=\pi r^{2}$, where $r = 3$ cm and $\pi=3.14$.

Step2: Calculate area of one circle

$A_1=\pi r^{2}=3.14\times3^{2}=3.14\times9 = 28.26$ $cm^{2}$.

Step3: Calculate area of two circles

Since there are two circular bases in a cylinder, the area of both circles is $A_{circles}=2\times A_1$.
$A_{circles}=2\times28.26 = 56.52$ $cm^{2}$.

Answer:

$56.52$