Arectangular box has a height of 7 centimeters and a volume of 336 cubic centimeters. the length of the box is three times the width. write an equation describing this situation and find the length and width of the box.

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given