Question

Area: A swimming pool is 80 feet wide and 90 feet long. If it is surrounded by square tiles, each of which is 1 foot by 1 foot, how many tiles are there surrounding the pool?

Answer 1

Given:

The length of rectangular swimming pool is L = 90 feet.

The width of rectangular swimming pool is w = 80 feet.

The dimnsion of tile is 1 foot by 1 foot.

Explanation:

The formula for the perimeter of rectangular swimming pool is,

$P=2(l+w)$

Substitute the values in the formula to determine the perimeter of rectangular swimming pool.

$\begin{gathered} P=2(90+80) \\ =340 \end{gathered}$

So 340 tiles surrounds the boundary of rectangular swimming pool. There are 4 corners of rectangular swimming pool.

The total number of tiles required for rectangular swimming pool is,

$340+4=344$

Answer: 344