Q: A trough is to be made from three planks, each 12 in. wide. If the cross section has the shape of a trapezoid, how far apart should the tops of the sides be placed to give the trough maximum carrying capacity?
OK the area of a trapezoid is
A=2bh
I know that much, but I've been...
Q: A solid if formed by adjoining two hemispheres to the ends of a right circular cylinder. The total volume of the solid is 12 cm^3. Find the radius of the cylinder that produces the minimum surface area.
OK, I got about halfway through my problem before I got lost.
V of shpere= 4/3(pi)r^3...