Triangular 28061

Calculate the surface area of ​​a triangular prism with a height of 7 dm. Measures the edges of the triangular base
45 cm, 5 dm, 550 mm.

Correct answer:

S =  105 dm2

Step-by-step explanation:

h=7 dm a=45 cm dm=45:10  dm=4.5 dm b=5 dm c=550 mm dm=550:100  dm=5.5 dm  o=a+b+c=4.5+5+5.5=15 dm S=o h=15 7=105 dm2

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