Error interval for 6.3

Could answer every question with steps

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? *

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red