140 x 120 x 4 = 67200mm3
151200
127.5
h = 5.9949 m
You neglected to say whether the 4mm is the radius of the circle, or the diameter,or the circumference. Each possibility leads to a different area.
2x(3x5+3x4+4x5) = 94 sq mm
50.265 square mm
A circle with a diameter of 4 mm has an area of : 12.57 mm2
A 4mm diamond measures 4mm in at least one measurement.
As wide as 4mm on a ruler
4mm its in the question
4mm is 0.15748032 of an inch.
4mm is smaller than 5mm