A flagpole is 30 feet high, and a mailbox is 3.5 feet high. The mailbox casts a shadow that is 5.25 feet long. How long is the flagpoles shadow at the same time?
Solved by a proportion......
Mailbox shadow length / Mailbox Height = Flagpole Shadow Length / Flagpole Height
5.25 / 3.5 = S / 30 cross-multiply
30 * 5.25 = 3.5 S
157.5 = 3.5 S divide both sides by 3.5
157.5 / 3.5 = S = 45 ft = Flagpole Shadow Length
