Johnny is buying gasoline at a station where 1 gallon of gasoline costs $3.47. If johnny put 5.7 gallons of gasoline in his car, how much will he pay? Rewrite the multiplication expression 3.47*5.7=(347*_)*(57*_)

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? *