The circle shown here has area πr2. if its radius is tripled in length its new area will be

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

What is the measure of the smallest angle in the diagram? 15 29 32 45

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3