Question 279808
{{{a^2+b^2=c^2}}}
{{{a^2+b^2=25^2}}}
{{{a^2+b^2=625}}}
list same ratios and put in the equation {{{a^2+b^2=c^2}}}
to find equivalent ratios multiply both numbers by the same number
3:4 {{{3^2+4^2=9+16=25}}} 
6:8 (i multiplied 3:4 by 2) {{{6^2+8^2=36+64=100}}}
9:12 (i multiplied 3:4 by 3) {{{9^2+12^2=81+144=225}}}
12:16 (i multiplied 3:4 by 4) {{{12^2+16^2=144+256=400}}}
15:20 (i multiplied 3:4 by 5){{{15^2+20^2=225+400=625}}}
hey we found 625 so the lengths have to be 15 and 20