Calculate the surface area of a prism with the following dimensions.
the length (l) = 7 units, the width (w) = 2 units and the height (h) = 6 units:
a.278 sq. units
c.136 sq. units
b.176 sq. units
d.587 sq. units

Surface area of a prism = 136 square units

Step-by-step explanation:

The length (l) = 7 units, the width (w) = 2 units and the height (h) = 6 units

find the surface area

Surface area of a prism= 2(length * width + width * height + height * length)

= 2(7*2 + 2*6 + 6*7)

= 2(14+ 12+ 42)

=2(68)=136

Surface area of a prism = 136 square units

the solution is 12x-6y