The circumference of circular ground is 396 m. find its diameter

396/π OR 126.05071

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Why?

To find the circumference of a circle, we use this formula;

C = πd

-> C represents the circumference

and d means the diameter.

Let's use this formula to figure out the diameter of this circular ground.

396 = πd

Let's isolate d.

-πd = - 396

Now, divide each term by - π to further isolate d.

d = 396/π

You should leave the answer as such. However, if you're required to give a decimal, make sure you solve using the full form of Pi, not just 3.14 or a couple numbers after the decimal (there should be an option on your calculator) for the most accurate results.

d ≈ 126.05071

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Check:

C = 396/π*π

C = 396