What is the approximate area of a circle with a circumference of 37.68 feet?

Answer 1

Now that I've been able to find out the full question you were wanting answered for you, I've done the hard work of extracting the maths for it and re-writing the question.

Now all that is needed is to rearrange the formulae for circumference and area of a circle to get a formula which will give the area from the circumference:

Circumference = 2 × π × radius

→ radius = circumference ÷ 2π

Area = π × radius²

= π × (circumference ÷ 2π)²

= π × circumference² ÷ 4π²

= circumference² ÷ 4π

I'll let you insert the relevant numbers and find the required area.

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Hint:

circumference = 37.68 ft

4π means 4 × π

π is the ratio of circumference to diameter of a circle and is approx 3.142, though your calculator will more than likely have a [π] button to supply the value to about 10 decimal places; you may need to put brackets around the divisor 4π.