10 POINTS What is the surface area of the Triangular Prism?
A) 230 units^2
B) 240 units^2
C) 250 units^2
D) 260 units^2

B

Step-by-step explanation:

third side of base=√(12²+5²)=√(144+25)=√169=13 units

surface area=area of three retangles+area of top and bottom

=(12+13+5)×6+2×1/2×12×5

=180+60

=240 units²

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this