asked 230k views
1 vote
A rectangular field is four times as long as it is wideIf the perimeter of the field is 300yards, what are the field's dimensions?

1 Answer

5 votes

Answer:

Length = 120 yards, width = 30 yards.

Explanation:

Lets use
l for length and
w for width.

The perimeter of a rectangular field is
2l + 2w. We can construct the following equations:


4w = l.


2l + 2w = 300.

If we plug
4w in for
l into the second equation, we get:


2w + 2(4w) = 300.


2w+8w = 300.


10w = 300.


w= 30.

Plug 30 in for
w into the first equation.


l = 4*30 = 120.

Length = 120 yards, width = 30 yards.

answered
User Rudis
by
8.2k points
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