I tried..... I really tried............cannot...... fight......... pedantry gene.........
That isn't 572sq m Umesh, old boy.
If the workshop is 15m high (!?), it's 242sq m in area and 3630cu m in volume.
At 11m high (still !?), it's 330sq m in area and the volume is obviously the same.
I know it's none of my business, but if you were considering buying paint for the floor, for example, you'd be getting waaaaay ttoo much.