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Answer:
the side lengths of the second triangle are 2.25mm ,3m, and 3.75mm
the work shown:
3mm 3mm × 3cm/4cm = 2.25mm
4mm 4mm × 3cm/4cm = 3mm
5mm 5mm × 3cm/4cm = 3.75mm
Meant to put the letter A
F= kx
so to get k divide both sides by x
so k = F/x