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Answer with Step-by-step explanation:

Use pythogorean theorem,

h^2=p^2+b^2

1.

h^2=p^2+b^2

h=√(5^2+12^2)

h=√169

h=13

2.

h^2=p^2+b^2

h=√(14^2+10^2)

h=√(196+100)

h=√296

h=2√74 ft

3.

h^2=p^2+b^2

h=√(13^2+8^2)

h=√(169+64)

h=√233 cm