Question

 can someone plz help me ... What is the lateral area of the rectangular prism? 

Assume the prism is resting on its base.     A. 504 in2   B. 396 in2   C. 312 in2   D. 90 in2

Answer 1

C, 312$in^{2}$ 

You find this my doing the formula Ph, which is the perimeter of the base times the height.

With that, you add 7+7+6+6 times 12. (so, 26 times 12) and you get 312.

Answer 2

$the\ lateral\ area:\\\\2\ rectangles\ 6in\ \times\ 12in\ and\ 2\ rectangles\ 7in\ \times\ 12in\\\\A_l=2\cdot6\cdot12+2\cdot7\cdot12=144+168=312\ (in^2)\\\\Answer:C$