An equilateral traingle had a perimeter of 36. find its area to the nearest tenth

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)