Level 2
John used 3 rubber bands to form the sides of triangle ABC where AB = 8 cm, BC = x cm and AC = 2x cm. Bob stretches two of the elastic bands and enlarges triangle ABC. The sides BC and AC are stretched to 2 times its original length. What is the perimeter of the stretched triangle ABC?
Level 3 PSLE
Fong wanted to build a set of steps with 1-cm cubes. The figures show how he built the steps from a height of 2 cm to 3 cm to 4 cm. If Fong continued building the steps in this way, what would be the height of the set of steps that had 135 cubes? Express your answer in cm.
Level 3 PSLE
Fong wanted to build a set of steps with 1-cm cubes. The figures show how he built the steps from a height of 2 cm to 3 cm to 4 cm. If Fong continued building the steps in this way, what would be the height of the set of steps that had 135 cubes? Express your answer in cm.