Which describes the combined variation in the formula h=V/πR^2

a) h varies jointly with V and r^2
b) h varies jointly with V and π, and inversely with the square of r
c) h varies directly with V and inversely with the square of r
d) h varies directly with V and inversely with π and the square of r

Question

Which describes the combined variation in the formula h=V/πR^2

a) h varies jointly with V and r^2
b) h varies jointly with V and π, and inversely with the square of r
c) h varies directly with V and inversely with the square of r
d) h varies directly with V and inversely with π and the square of r

justjm · Answer

You can take notice to what's on the numerator and denominator and then decide, or a really nice strategy here is to try and plug in some numbers to see how different values increase or decrease based on the change of other values.