Prism

Find the volume and surface area of prism with base of an equilateral triangle with side 7 dm long and the body height of 1.5 m.

Correct result:

V =  0.3183 m3
S =  3.5744 m2

Solution:

a=7 dm→ m=7/10  m=0.7 m h=1.5 m  P=34⋅ a2=34⋅ 0.72≐0.2122 m2  V=P⋅ h=0.2122⋅ 1.5=0.3183 m3
S=2⋅ P+3⋅ a⋅ h=2⋅ 0.2122+3⋅ 0.7⋅ 1.5=3.5744 m2

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