In a pie chart displaying the annual federal budget allocation, education receives ₦180 billion out of a total national budget of ₦720 billion. What angle of sector represents education in the chart?
Answer and explanation
Correct answer: B. 90°
- Step 1: Calculate fraction of total: 180 / 720 = 1/4 = 0.25. Step 2. Sector angle = fraction × 360° = (1/4) × 360° = 90°. Answer: 90°. Why not the others: 60° represents 1/6 (₦120B); 120° represents 1/3 (₦240B); 45° represents 1/8 (₦90B).
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