The compare is hat they both have the same y-intercept, the contrast is that tone line is positive and the other line is negative
Answer:
63.7 inches
Step-by-step explanation:
half the base is 9 inches, so the equal legs are each
L = √(9² +21²) = 22.8473...
Perimeter = 2(22.8473) + 18 = 63.6946... ≈ 63.7 inches.
1st step is to find the radius, then substitute into the formula for area of a circle

to find the radius, just halve the diameter
Sorry, my answer was wrong. I can't delete it so as not confuse anybody i changed it to this.
Answer:
40 %
Step-by-step explanation: