Answer:

Step-by-step explanation:

Hope this helps.
(a-b)(a+b) because when you reverse the sum you do axa and ax-b xx
The length of the pool table is 4 and the width of the table is 8.
W=4
L=8
W times L=32 or 4 times 8=32
2(5*4)+2(4*3)+2(3*5)=94 sq.m (Orginial SA)
2(4*5)+2(5*6)+2(6*4)=148 sq.m (Total SA)
148-94=54 (New SA)