Question

FIND THE AREA AND CIRCUMFRENCE OF CIRCLE WITH RADIUS 9CM USE THE VALUE 3.14 TO HELP WITH ANSWER

Answer 1

Area = 254.34 square centimeters

Circumference = 56.52 centimeters

Explanation:

We will use the formula for area and circumference of a circle to solve this.

Area =
`\pi r^2`

Where π is the constant taken as 3.14

r is the radius, given as 9 cm

Let's substitute and find the area:

`A=\pi r^2\\A=(3.14)(9)^2\\A=254.34`

Area = 254.34 square centimeters

Now, the formula for circumference is:

Circumference =
`2\pi r`

Where π is the constant taken as 3.14

r is the radius, given as 9 cm

Substituting, we find the answer to be:

Circumference =
`2\pi r = 2 (3.14)(9) = 56.52`

Thus,

Circumference = 56.52 centimeters