Suppose a square patio has an area of 441 square feet use the formula for the area of a square to find the length of each side of the patio?

Question

1500 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-16T11:52:58

#21 \ "ft"#

The area of a square is given by #s^2#, where #s# is the length of its side.

We got:

#s^2=441 \ "ft"^2#

#s=sqrt(441 \ "ft"^2)#

#=+-21 \ "ft"#

Since #s# is a length, therefore #s>0#, and also:

#s=21 \ "ft"#

So, the length of the side of the patio is #21# feet.