The widths of two similar rectangles are 10 cm and 15 cm. What is the ratio of the perimeters? Of the areas?
A. 3 : 4 and 9 : 16
B. 3 : 4 and 4 : 9
C. 2 : 3 and 9 : 16
D. 2 : 3 and 4 : 9
The answer for the question shown above is the las option, which is: D. 2:3 and 4:9. The explanation is shown below: 1. You have that widths of the two similar rectangles are 10 cm and 15 cm. Therefore: ratio=10:15 ratio=2:3 2- So, the ratio of the perimeter is: ratio of the perimeter= 2:3 3- The ratio of the areas is: ratio of the areas=2²:3² ratio of the areas=4:9
