Triangular prism

Calculate the surface of a triangular prism with the base of an equilateral triangle with a side length of 7.5 cm and a corresponding height of 6.5 cm. Prism height is 15cm.

Correct answer:

S =  386.25 cm2

Step-by-step explanation:

a=7.5 cm v=6.5 cm h=15 cm  S1=2a v=27.5 6.5=8195=24.375 cm2 o=3 a=3 7.5=245=22.5 cm  S=2 S1+o h=2 24.375+22.5 15=41545 cm2=386.25 cm2

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Showing 2 comments:
where did you get the 8.5 value, the given side length is 7.5.

thnk you for found typo fix


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