This would be the identity property of addition telling us that any number added to zero is that number (i.e. 6 added to zero is still 6)
Length = x
width = y
y = 16
x = 2y
x = 2(16)
x = 32
perimeter = 2x + 2y
= 2(32) + 2(16)
= 64 + 32
= 96
20.2 * -2.5ft = -50.5ft
Hence, Winston reach -50.5 feet during his deepest dive.
