Circumfrence area of circles question
Above don't understand it

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

The radius of a sphere is 3 inches. which represents the volume of the sphere?