(Q11)Find a rational expression for the ratio of the surface area of a cylinder to the volume of a cylinder, where the height is h and the radius is r. Q12) then find the ratio when the radius is 3 and
the height is 10
(Surface area=2rr2 + 2nrh)(Volume=nra)

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

a

step-by-step explanation:

jjddbdhid r

6 cm

step-by-step explanation:

its totaly b

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