hi... um..im stuck withone question can anyone help me workout the surface area of a cube its height is 2cm only

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Which choice names the hypotenuse of triangle xyz? a. segment yx b. segment yz c. segment ab d. segment zx