Answer:square root 130
Step-by-step explanation:
You have to use the Pythagorean theorem a squared plus b squared is c squared so 13 squared plus 18 squared equals c squared. 13x13=169 18x18=324 169+324=493 so c squared is 493 to get c you square root 493 which equals 22.2 so the diagonal, c, is 22.2 centimeters long
25 divided by 5 is 5, 45 divided by 9 is 5
13500-1500= 12000/5=2400
12000-2400= 9600
$9600 most expensive painting
