Answer: D. 846 units squared
Step-by-step explanation:
12x9=108
108x2=216
15x9=135
135x2=270
12x15=180
180x2=360
360+270+216=846 units squared
The surface area of the rectangular prism is 846 sq.units
A rectangular prism is a three dimensional figure with rectangle at its base. It can also be called as a Cuboid .
A rectangular prism is given with
length 12 units
Width 15 units
Height 9 units
The surface area of the rectangular prism is given by
A = 2 * l * w + 2 * l * h + 2 * w * h
A = 2 * 12 * 15 + 2 * 9 * 12 + 2 * 15 * 9
A = 360 + 216 + 270
A = 846 sq.units
Therefore the surface area of the rectangular prism is 846 sq.units
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