# Calculus help

#### PLuMMy03

I need help with these problems.

1.)Find the surface area by revolving r=1+cos theta about the x-axis.

2.) Write the equation of the hyperbola 9x^2-4y^2-36x+24y-36=0 in the standard form. Find its vertices, foci, asymptotes, and intercepts.

3.)Find the area of the region between the curves r=2 cos theta and r=2 sin theta.

#### SecretAgentMan

##### Caution: Beware of Male
two years since i've had calculus....

#### Genie

Hola,

Here is the answer for #1:

] 90
Surface area = 2 pi (integral) ] (1+cos theta)
] 0

don't have table of integrals to complete it though. ps. its not lining up properly when posted but you understand the way its supposed to be

#### aliascazUK

oh dear god i havent done that sort of math in like a year sorry cant help

#### November 13

##### The Black Beanie
Genie said:
Hola,

Here is the answer for #1:

] 90
Surface area = 2 pi (integral) ] (1+cos theta)
] 0

don't have table of integrals to complete it though. ps. its not lining up properly when posted but you understand the way its supposed to be
our AA genius man I don't remember anything either, all I remember is some problem about a farmer and area of his farm mixed with intregals 