Calculate the angle of the sector representing cassava in a pie chart, given the acres for various crops.

• Rice: 2 acres
• Pineapple: 5 acres
• Cassava: 3 acres
• Cocoa: 11 acres
• Palm oil: 9 acres

Total acres $= 2 + 5 + 3 + 11 + 9 = 30$ acres.

The acres for cassava are 3.
The proportion of cassava acres to the total acres is:

$$\text{Proportion} = \frac{\text{Acres for cassava}}{\text{Total acres}} = \frac{3}{30} = \frac{1}{10}$$

A full circle in a pie chart represents $360^\circ$. To find the angle of the sector for cassava, multiply its proportion by $360^\circ$.

$$\text{Angle} = \text{Proportion} \times 360^\circ$$ $$\text{Angle} = \frac{1}{10} \times 360^\circ$$ $$\text{Angle} = 36^\circ$$

The angle of the sector for cassava is $36^\circ$.

The final answer is $\text{B) } 36^\circ$.