area of square=side^2
therfror
4840=side^2
sqrt both sides
???=side
estimate
find the integers above and below when squared
50²=2500
up
60²=3600
up
70²=4900
down a little bit
69²=4761
bingo
4761<4840<4900
69²<side²<70²
the legnth of the side is between 69 and 70
