Pls help really need it
Give statement and reason

Which expression is equivalent to sq-80

What point is the projection of q on a) r b) s c) t

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? *