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25 votes
25 votes
Find the circumference

Find the circumference-example-1
User Catalin
by
3.2k points

2 Answers

22 votes
22 votes

Answer:


6.25\pi

Explanation:

A circumference of a circle can be determined by this: 2*pi*r

We're given the diameter. Divide that by 2 to get the radius.

6.45/2 = 3.225

Now multiply that by 2*pi. That gives us 2 * 3.14 * 3.225 = 20.253.

This could've also been done easier by doing pi*d where d is the diameter and you give the answer by multiplying them both. Also works, but the above formula is just key to many things and can also be used to derive the simpler one. Hope it helps! :)

User Sasi Varunan
by
2.5k points
22 votes
22 votes

Answer:

6.45π OR 20.253 units.

Explanation:

Given, Diameter (d) = 6.45 units

Circumference = πd = 6.45π

If, π = 3.14, then,

6.45π

= 6.45 * 3.14

= 20.253 units

Hope it helps ⚜

User Daniel Marcotte
by
3.1k points