A triangle represents the roof of a house. If its base is increased by 20% and height by 10%, by what percent does the area increase?
Show answer & explanation
Correct answer: B
Explanation
Increase in base = 20%
Increase in height = 10%
Area = Base × Height
New Area = 1.2 × 1.1 = 1.32
Increase = 1.32 − 1 = 0.32
Percentage Increase = 32%