Step-by-step I'm unable to remove this text sorry ;.;

Answer:

(I) 15m

(II) 225m

(III) 289 m

Step-by-step explanation:

(i)Perimeter of a square =60m=4×side of a square.

side =60/4 =15

(ii)area=side × side =15×15 = 225

(iii) if each side increase by 2m

then the new side will be 15 +2 =17 m

Now, the new area =289 m²

I hope this will be helpful