1(a) Pie chart for export values
Total export value = 100+240=340 units.
Sector angle formula: θ=totalvalue×360∘
For Fiber co.:
θ=340100×360∘
Simplify fraction: 340÷20100÷20=175
θ=175×360∘=171800∘≈105.88∘
For Timber co.:
θ=340240×360∘
Simplify fraction: 340÷20240÷20=1712
\theta = \dfrac{