Question

The diameter of a circle is 36 meters. What is the circle's area? Use 3.14 for ​.

Answer 1

1017.36 m²

Explanation:

Info:

Diameter: 36m

π: 3.14

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If the formula for area of circle is: A = πr², and the radius is 18 (half of 36)

Then to find the area, we just multiply π with 18².

18 x 18 = 324.

324 x 3.14 = 1017.36

The area of the circle is 1017.36 m²

Answer 2

Hi Student!

The first step to most problems is to determine the important information that is provided in the given problem statement. In this problem we can see that we are given a diameter of a circle which is 36 meters. Another important thing that we can determine is that the question is asking for us to find the area of the circle using 3.14 for π.

Now that we have collected our important information we can move onto the next step which isn't to find the area yet. First, we need to determine what the radius of our circle is.

Determine the radius

• 
  `radius=(diameter)/(2)`

• 
  `radius=(36\ m)/(2)`

• 
  `radius=18\ m`

Now, we can finally plug in our values into the area of a circle equation and solve. The only thing that we need to find the area is the radius which we determined from the previous step.

Plug in the values

• 
  `area = \pi * radius^2`

• 
  `area = 3.14 * (18\ m)^2`

Expand the exponent

• 
  `area = 3.14 * (18\ m * 18\ m)`

• 
  `area = 3.14* 324\ m^2`

Multiply the final two numbers

• 
  `area = 1017.36\ m^2`

Therefore, the area of a circle with a diameter of 36 meters is 1017.36 meters squared.