Given that the area of the rectangle is 15
cm^2.
Also, given that the perimeter is 16
cm^2
We need to find the length of the
sides.
==> Let the sides be L and
w.
==> L*W = 15
...........(1)
==> 2L + 2W =
16
We will divide by
2.
==> L + W = 8
..............(2)
We will use the substitution method to
solve.
==> L = 8-
w
==> (8-W) * W =
15
==> 8W - W^2 =
15
==> W^2 - 8W +15 =
0
==> (w-3)(W-5) =
0
==> W1= 3 ==> L1=
5
==> W2 = 5 ==> L2 =
3
But the length must be greater than the
width.
Then, the length is 5 and the width is
3.
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