Answer:
a. 30% decrease in perimeter
b. 75% decrease in area
Step-by-step explanation:
Before decrease:
Perimeter = 2L + 2W = 2(6) + 2(4) = 12 + 8 = 20
Area = L * W = 6 * 4 = 24
After decrease:
Perimeter = 2L + 2W = 2(6) + 2(1) = 12 + 2 = 14
Area = L * W = 6 * 1 = 6
Percent of change in the perimeter:
20 - 14 = 6
6/20 = 0.3 or 30% decrease in perimeter
Percent of change in the area:
24 - 6 = 18
18/24 = 0.75 or 75% decrease in area