1. A rectangular classroom measures 30 feet by 20 feet. How many wooden tiles are needed to fill the floor of the classroom if each tile measures 24 inches by 36 inches?
2. How many liters of water can a tank hold if 2 liters can be stored in. 2, 000cm3 space. A water tank is in the form of cylinder with a height of 150 cm and a diameter of 154 cm.
3. The world’s tallest flagpole is 170 m stands in Jeddah, Saudi Arabia, The ground is made up of coralline limestone over sandstones, siltstones and mudstones, and it required 16 piles of 25 m long and 1,200mm in diameter to support the foundation block.
a. When the angle of elevation of the sun is 55o, what is the length of the shadow cast by the flagpole.
b. Find the angle of elevation of the sun when the length of the shadow cast by the flagpole is 120m.
