1. Cavalieri's Principle is most closely hinged on which measurements?

it is closely hinged on the height, and "matching" equal areas everywhere along the height.

Step-by-step explanation:

Cavalieri's Principle states that If, in two solids of equal altitude, the sections made by planes parallel to and at the same distance from their respective bases are always equal, then the volumes of the two solids are equal

This simply means that "if two solids have the same height, and "matching" equal areas everywhere along the height, the solids have the same volume."

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm