Triangular prism

The triangular prism has a base in the shape of a right triangle, the legs of which is 9 cm and 40 cm long. The height of the prism is 20 cm. What is its volume cm3? And the surface cm2?

Correct result:

V =  3600 cm3
S =  2160 cm2

Solution:

a=9 cm b=40 cm h=20 cm  c=a2+b2=92+402=41 cm  S1=a b2=9 402=180 cm2  V=S1 h=180 20=3600 cm3
o=a+b+c=9+40+41=90 cm  S=2 S1+o h=2 180+90 20=2160 cm2



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Pythagorean theorem is the base for the right triangle calculator.

 
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