Agroup of 22 students participated in a race. their scores are below

Ineed in figuring out this problem.

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? *

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read