Answer:
#4
When the figures are similar, their perimeters and their corresponding sides will have same ratio.
- 60/84 = 5/x
- 5/7 = 5/x
- x = 7 inches
#5
When the figures are similar, their areas will have the ratio equal to the square of ratio of corresponding sides.
- 16.5/x = (6/7.5)²
- x = 16.5*56.25/36
- x = 25.78 in² (rounded)
