Question

Calculate the area and circumference of a circle with diameter 8cm explain by step by step

Answer 1

Area = 50.27cm² , Circumference = 25.13cm

Explanation:

First off, to find the area of a circle the formula is
`\pi`r², and in the equation you gave a diameter, so to get a radius divide the diameter by 2.

So therefore
`\pi`4² is your equation and the answer is 50.27cm²

Now to find the circumference. The formula to find circumference is 2
`\pi`r.

Again if you're given a diameter divide it by 2 to get the radius.

So 2
`\pi`4 is the equation, and the answer is 25.13 cm.

Please let me know if you have any more questions, or need any extra assistance!

Answer 2

Area: 201.06 cm^2

Circumference: 50.265 cm

Explanation:

Area of a circle: A=πr²

π≅3.1415

A=π(8)²

Area≅201.06 cm²

Circumference of a circle: C=2π²

C=2π(8)

C=50.265 cm