Solution: Determine the diameter of a closed cylindrical tank to obtain minimum surface area

Solution: What is the ratio of the width of the rectangle to the total height?

Solution: Find the overall dimensions if the total area of the poster is minimum

Solution: What is the volume of the largest box that can be constructed?

Solution: Find the minimum amount of tin sheet that can be made into a closed cylinder

Solution: What are the dimensions of the field he can enclose the maximum area?

Solution: What is the maximum possible area for the triangle?

Solution: What are the numbers if their product is to be the largest possible?

Solution: Find the minimum distance from the point (4, 2) to the parabola y^2=8x

Solution: Find the radius of curvature at any point in the curve y+lncos x=0