Answer:
Part A.
w = √(d^2 - l^2)
Part B.
w = 6ft
Explanation:
length l = 8ft
diagonal d = 10ft
width w = ?
we can see it as a Trangle, so using a Pythagorean theorem,
d^2 = l^2 + w^2
w = √ (d^2 - l^2)
w = √ (10^2 - 8^2)
w = √ (100 - 64)
w = √ 36
w = 6