L =
w
a = 12
Length times width = area
L · w = a
w · w = 12
= 12
Divide both sides by
or mulitply both sides by
(either one is fine)
÷
= 12 ÷
or
= 12
= 18
Square root both sides to get rid of the squared on the w
=
w = 4.24
Answer:
18 yds
Step-by-step explanation:
Let the length and width be L and W respectively.
Then L· W = area = 72 yd², so that L = (72 yd²) / W.
But also L = 3W + 6 yd. Subbing this into L· W = area = 72 yd², we get:
(3W + 6) · W = 72, or
3W² + 6W - 72 = 0. Since all four terms are evenly divisible by 3, we get:
W² + 2W - 24 = 0, which factors as follows:
(W + 6)(W - 4) = 0. Then W + 6 = 0, or W = -6 (makes no sense for a length), and W - 4 = 0 yields W = 4 yds.
If the shorter side is of length 4 yds, then the longer side is of length
L = 3(4 yds) + 6 yds = 18 yds
10......................:)
Answer: :) hi! <3
Step-by-step explanation:
