A skylight is trapezium-shaped with area 84 cm² and bases 10 cm, 14 cm. What is its height?
Show answer & explanation
Correct answer: B
Explanation
Given:
Area of trapezium = 84 cm²
Base = 10 cm
Base = 14 cm
By formula:
Area of trapezium = 1/2 × (base + base) × height
84 = 1/2 × (10 + 14) × h
84 = 1/2 × 24 × h
84 = 12h
h = 84 / 12
h = 7 cm