Past papers › JAMB 2002 · UME › Question 29 Question JAMB General Maths 2002 Objective Statistics: data & averages Statistics: data & averages
The acres of rice, plantain, cassava, cocoa and palm oil in a certain district are 2, 5, 3, 11 and 9 respectively. What is the angle of the sector for cassava in a pie chart?
A 36 ∘ 36^\circ 3 6 ∘ B 60 ∘ 60^\circ 6 0 ∘ C 108 ∘ 108^\circ 10 8 ∘ D 180 ∘ 180^\circ 18 0 ∘
Worked solution (try it first) Total area:
2 + 5 + 3 + 11 + 9 = 30 2 + 5 + 3 + 11 + 9 = 30 2 + 5 + 3 + 11 + 9 = 30 acres.
Each acre gets
360 ∘ 30 = 12 ∘ \frac{360^\circ}{30} = 12^\circ 30 36 0 ∘ = 1 2 ∘ .
Cassava has 3 acres:
3 × 12 ∘ = 36 ∘ 3 \times 12^\circ = 36^\circ 3 × 1 2 ∘ = 3 6 ∘ , option A.
Watch out
Take the right crop: cassava is the third item, 3 acres. Using plantain's 5 acres gives 60 ∘ 60^\circ 6 0 ∘ Report a problem with this question