Measures and geometry

1. Convert 650 mL to litres.

2. A square has perimeter 36 cm. Find one side (cm).

3. A parallelogram has base 12 cm and perpendicular height 5 cm. Find its area (cm²).

4. A prism has cross-sectional area 15 cm² and length 8 cm. Find its volume (cm³).

5. An isosceles triangle has vertex angle 40°. Find each equal base angle (degrees).