Which property would justify the following statement? If x+2= y and y = 20, then x+2=20.

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Can someone show me step by step how to do this?