A rational number is any number that can be expressed as the quotient or fraction of two integers, a numerator and a non-zero denominator
Assume the radius is R.
2*pi*R = 28 -> R = 14/pi
So the area will be pi*R^2 = 196/pi
Equation: 17 + x = 23
To solve this you would do 23 - 17 to get x
x = 6
5% = 0.5
0.5n = 85
Divide by 0.5
0.5n = 85
/0.5 /0.5
n = 170.
The number is 170.
