Question

Two rectangles are similar. One has a length of 12 cm and a width of 9 cm, and the other has a width of 8 cm. Find the length of the second rectangle. Round to the nearest tenth if necessary. 8 cm 12.3 cm 6 cm 10.7 cm

Answer 1

Use an equation of ratios to solve this:

12 cm 9 cm
---------- = ---------
x 8 cm

Cross multiplying, 9x = 96, and x = 32/3 cm (10 2/3 cm).