Question

If the diameter of a circle is 5, what is its circumference?

Answer 1

Hii!

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Answer:

Explanation:

`\bullet` Let's work out the circumference

`\twoheadrightarrow\sf C=\pi d` C=circumference
`\pi` = pi d=diameter

`\bullet` Stick in the value of d, 5

`\twoheadrightarrow\sf C=\pi \cdot5`

`\bullet` Multiply & obtain the circumference

`\twoheadrightarrow\sf C\approx15.7`

NB: The circumference was rounded off to the nearest tenth, because the entire circumference of the circle is an irrational number.

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Hope that this helped! Best wishes.

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Answer 2

Multiply the diameter by PI which is 3.14 so that means the circumference would be 15.7.