What is the surface area of this rectangular prism?

96cm

Step-by-step explanation:

For a triangular prism we find the surface area by doing base times height/ length times width, but since we have a triangle we would have to divide the answer we get by 2. Once we get all the sides we then would have to add them all up.

3X4X1/2         ( HINT: ITS THE SAME AS THE FRONT)      7X5            

12X1/2             6= back                                                          35= top                                

6= front

7X4                           3X7                            of the area of the shapes we add

28= bottom              21= side                       all of them together.

Surface area= 6+6+35+28+21= 96 cm

the answer will be the last one

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.