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3 years ago

Find the area of a circle with a circumference of 31.4 units.

Mathematics

2 answers:

Ksivusya [100]3 years ago

5 0

The Area would be 78.46

Natali [406]3 years ago

5 0

Hello there,

The question here gives us the circumference of a circle and is asking us to find the area using that...

Well the equation for the circumference is C = 2πr. Using this we need to solve for r...

31.4 = 2πr ⇒15.7 = πr ⇒about 5 = r

Now that we know the r we can solve for area which the equation would be A = πr².

plug in what you already know: A = π(5)²
do the exponent: A = 25π
multiply 25 by π: A = 78.5

The area of the circle would be: 78.5 units

Hope I helped,

Amna

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