Question

The perimeter of a rectangular pool is 348 m.
If the width of the pool is 78 m, what is its length?

Answer 1

Answer:

The length of the rectangle is $96 \text{m}$

Step-by-step explanation:

The perimeter of a rectangle is calculated by $P=2(l+w)$ where $l$ represents the length and $w$ represents the width of the rectangle.

The perimeter of a rectangular pool is $348 \text{m}$.

$P=2(l+w)\\348=2(l+78)\\348=2l+156\\2l=348-156\\2l=192\\l=\dfrac{192}{2}\\l=96 \text{m}$

Answer 2

Perimeter=add all sides
Rectangle=4 sides
Given: width of pool=78m
Given: perimeter is 348m
Other side parallel will also be 78m
Unknown: lengths (2)
78x2=156m
348-156m=192m
Unknown lengths should add up to 192m.
Unknown lengths should be the same length because parallel sides on a rectangle equal each other.
192/2=96m.
The length of the pool is 96m.