The expression p (4,3) is equal to: a.3! b.4! c.1

P(n,r)=n!/(n-r)!
P(4,3)=4!/(4-3)!
P(4,3)=1*2*3*4/1=24

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2