#### Answer

39,304 times as large

#### Work Step by Step

Since the actual length of each side is $34$ times as large, the volume is $34^3$ as large.
$34^3=39,304$
Area is the product of width, length and height.
The area of the model is:
$2\times9\times4=72$ sq in
If the scale is 1:34, each side of the actual truck is 34 times as large as the model. The area of the actual truck is:
$2(34)\times9(34)\times4(34)=68\times306\times136=2,829,888$ sq in
Divide the actual area by the area of the model to find how many times greater
$2,829,888\div 72=39,304$