Vertical line is a way to determine whether a functin is a function or not.
The shaded area is 299.59un^2.
The ratio of similar areas is the square of the ratio of the scale factor.
Circle R's sector is (5/2)² = 25/4 the area of Circle Q's sector.
The basic ratio of 25:40 would be 5:8.
Since 25:40 is equivalent to the fraction 25/40, you would simplify.
25 (divided by) 5 = 5
40 (divided by) 5 = 8
So, the answer is 5:8.
