Step-by-step explanation: You subtract 95 from 240, which gives you 145 so you do 145/22.5 which will give you 6.4444 but you can't buy .44 of a shirt so you round down and you get 6.
Based on the dimensions of the shape, starting from the bottom right corner the boxes that make up the plan of the shape are: 13, 9, 10, 11, 7, 3 and 4.