Question

Mark needs to cut a piece of glass to replace a broken window. He has four pieces of glass: 6 feet long, 5 feet long, 3 feet long, and 7 feet long. If the length of the glass he needs to cut is square root 20 feet long, which piece of glass should he cut to have the least amount of unused glass?

Answer 1

Answer: He will use 5 feet long to have the least amount of unused glass.

Explanation:

Since we have given that

There are four pieces of glass i.e.

6 feet long, 5 feet long, 3 feet long, 7 feet long .

If the length of the glass he needs to cut is
`√(20)` feet long,

Then,

`√(20)=4.47\ feet\ long`

So, Mark will use 5 feet long he should use cut to have the least amount of unused glass.