[" at which the area of the cireasing unitormly at the rate of "3cm/s" .Find the rate "],[" at which the area of the circle is increasing when the radius is "10cm" ."],[" An edge of a variable cube is increasing at the rate of "3cm" ) "],[" volume of the cube increasing when the edge is "10cm" long? "],[(5)" A stone is dronned into a guigt lote edge is ( "10c" ) "]