Answer:
A convex mirror is placed to the right of an object. The image formed by the mirror will be a virtual image that appears to be on the right of the mirror.
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The length and breadth(width) of the pool are

Let

From the question, we can build the following relationships

subtracting to eliminate
(we do not even need it!)

we can also build another relationship from the question. Since the area of the strip equals the area of the pool:

We have two unknowns,
and
. Eliminate 

If we solve the quadratic equation for
, we get

and

The length and breadth(width) of the pool are

Learn more about area here: brainly.com/question/1447350
Divide 2xz in each side
W/2xz=2xyz/2xz
W/2xz=y
Triangle
Solve for area
A=hbb
2