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
