Answer: -30
Step-by-step explanation:
Answer:
9.87
3.29*3= 9.87
4 is a positive number
the surface area is 30mm
width = 11, len = 19
length = 2w - 3
l = length
w = width
2(length) + 2(width) = perimeter
2(2w - 3) + 2(w) = 60
6w -6 =60
w = 11
len = 2(11) - 3