Triangular prism

Calculate the surface area and volume of a triangular prism, base right triangle if a = 3 cm, b = 4 cm, c = 5 cm and height of prism h=12 cm.

Correct result:

S =  156 cm2
V =  72 cm3

Solution:

a=3 cm b=4 cm c=5 cm v=12 cm  S1=a b2=3 42=6 cm2 o=a+b+c=3+4+5=12 cm  S=2 S1+o v=2 6+12 12=156 cm2
V=S1 v=6 12=72 cm3



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