Find the area of a circle with a radius of 3

Question

asked Feb 8, 2019 201k views

2 Answers

Shinebayar G · Answer 1 · 2019-02-09T20:41:22+0000

Answer:
$Area = 9\pi units^(2)$

Step-by-step explanation: To find the area of a circle with a radius of 3 units, start with the formula for the area of a circle.

$Area = \pi r^(2)$

In this problem, we are given the radius of the circle which is 3 units so we can plug a 3 into our formula.

$Area = (\pi) (3units)^(2)$

Remember that 3² is equal to 3 units x 3 units or 9 units².

$Area = 9\pi units^(2)$

The reason we square the units is for us to remember that we are dealing with area and not a 1 dimensional or 3 dimensional figure.