Answer: (a) The English system of units used in surveying:
Length: The basic unit of length is the foot (ft).
Area: The basic unit of area is the square foot (ft²).
Volume: The basic unit of volume is the cubic foot (ft³).
Angles: The basic unit of angles is degrees (°).
(b) The SI (International System of Units) system of units used in surveying:
Length: The basic unit of length is the meter (m).
Area: The basic unit of area is the square meter (m²).
Volume: The basic unit of volume is the cubic meter (m³).
Angles: The basic unit of angles is the degree (°) or the radian (rad).
It's worth noting that while the English system is still used in some countries, the SI system is the globally recognized and widely adopted system of measurement.
Explanation: