You are assembling a new kite. The details on the container state that the kite has an area of 270 square inches and the length of the vertical diagonal is 30 inches. Find the length of the other diagonal.
The cylinder has a height of 1.2m, radius 0.4m and is open at the top. The inside surface is painted at a cost of $2.30 per m.2.
Calculate the cost of painting the inside surface.