Becky4paws
Junior Member
- Joined
- Feb 15, 2006
- Messages
- 63
Given that a cylinder of a radius r and height h has volume V = pi (r^2)(h) and a circle of radius r has area A = pi (r^2) and circumference of C =2(pi)(r).
A soda can haolds 12 fluid ounces (approx. 6.89(pi) cubic inches). Express the surface area of teh can as a function of its radius.
I have solved for V below but don't feel comfortable with the answer:
V = pi(r^2)(h)
6.89pi = pi(r^2)(h)
6.89pi/pi(h) = r^2
If that is actually correct, I would continue by substituting that answer into A = pi(r^2), but I don't feel I am correct in the above answer.
A soda can haolds 12 fluid ounces (approx. 6.89(pi) cubic inches). Express the surface area of teh can as a function of its radius.
I have solved for V below but don't feel comfortable with the answer:
V = pi(r^2)(h)
6.89pi = pi(r^2)(h)
6.89pi/pi(h) = r^2
If that is actually correct, I would continue by substituting that answer into A = pi(r^2), but I don't feel I am correct in the above answer.