The formula for the volume of a cylinder is V = πr^2h, where r is the radius and h is the height.
For the first cylinder:
r = 7 mm
h = 8 mm
V = π(7)^2(8) ≈ 1232.8 mm^3 ≈ 1232.8 cm^3
The volume of the first cylinder is approximately 1232.8 cubic millimeters or 1232.8 cubic centimeters.
Note: I converted the volume to cubic centimeters since it is a more commonly used unit for volume than cubic millimeters.