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4 years ago

FInd the surface area of the triangular prism

Mathematics

2 answers:

Marta_Voda [28]4 years ago

3 0

Answer:

273.7

Step-by-step explanation:

first fine the sides that isn't the base.

triangle area formula: (b*h)/2

(14*9)/2 = 63

since there are 3 sides you multiply this by three.

63*3=189

then find the base.

same formula since its a triangle.

(12.1*14)/2 = 84.7

now add them both up:

84.7+189 = 273.7

hope this helps!

Fofino [41]4 years ago

3 0

Answer:

273.7 mm²

Step-by-step explanation:

Area of base:

1/2*14*12.1= 84.7 mm²

3 faces are same:

3*1/2*14*9= 189²

Total:

84.7+189= 273.7 mm²

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