Use cylindrical coordinates.
find the mass and center of mass of the s solid bounded by the paraboloid
z = 9x^2 + 9y^2
and the plane
z = a (a > 0)
if s has constant density k.
m=
(x, y,z)=

no this is a nonlinear negative

i don't know

step-by-step explanation:

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75