Answer:
6
Step-by-step explanation:
if you use a= l x w substitute in what you know
54 = 9 x w
divide both sides by 9
b=6
it lies between P and R because I tootk the test
7 ÷ (1 ÷ 8) = 7 x 8
196 is think
because 224 - 28 = 196 then x = 196
