2.
conearea/cylinder area= (rl+r^2)/(rh+r^2)=
(l+r)/(h+r)
1. Jeffs builds model train layouts. He has $75 to spend on packages of miniature landscape items. He receives 6 free packages with each order. The number of packages y that Jeff can buy is given by y = 75/x + 6, where x represents the cost of each package in dollars. Describe the reasonable domain values and graph the functions.
A: Both the number of packages and the cost of each package in dollars will be nonnegative, so the nonnegative vlaues are reasonable for the domain and range.
Graph: ?
2. Suppose a cone and a cylinder have the same radius and that the slant height l of the cone is the same as the height h of the cylinder. Find the ratio of the cone's surface area to the cylinder's surface area.
Area of cone: S = πrl + πr^2
Area of cylinder: S = 2πrh + 2πr^2
1 answer
1 answer