Question

The diameter of a round dinner plate is 10 inches. what's the area of the plate?

a. 314 square inches
b. 39.25 square inches
c. 78.5 square inches
d. 39.25 inch

Answer 1

For calculating the area of a circle, we have to use the formula A =
`\pi r^(2)`

We also know that the diamter is twice the length of the radius. So, the radius is 5 inches.

So now, all we have to do is multiply
`\pi` by
`5^(2)`, and we get an answer of around 78.5 square inches

Hope I helped!! xx