Height of the cuboid

Cuboid with a rectangular base, measuring 3 cm and 4 cm diagonal has a body 13 centimeters long. What is the height of the cuboid?

Correct result:

c =  12 cm

Solution:

a=3 cm b=4 cm u=13 cm  s2=a2+b2 s=a2+b2=32+42=5 cm  u2=c2+s2  c=u2−s2=132−52=12 cm

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