After geometry class, Bill wants to count how many lines he drew. For each shape, he drew one line per side. If he drew 12 triangles, 8 squares, and 4 pentagons, how many lines did he draw?
For the triangles, he drew 36 lines because 12 times 3 equals 
<gadget id="calculator">12*3</gadget>
<output>36</output>
36.
For the squares, he drew 32 lines because 8 times 4 equals 
<gadget id="calculator">8*4</gadget>
<output>32</output>
32.
For the pentagons, he drew 20 lines because 4 times 5 equals 
<gadget id="calculator">4*5</gadget>
<output>20</output>
20.
He drew 88 lines in total because 36 plus 32 plus 20 equals 
<gadget id="calculator">36+32+20</gadget>
<output>88</output>
88.

<result>88</result>