Answer:
Step-by-step explanation:
BP ^2 = AP*PC
AP = 5
PC = 8
BP^2 = 5 * 8
BP^2 = 40
Don't bother taking it down any further. We are going to need it as it is.
BP^2 + PC^2 = x^2
BP^ = 40
PC^2 = 8^2 = 64
40 + 64 = x^2
104 = x^2
sqrt(x^2) = sqrt(104)
x = 2 sqrt(26) or
x = 10.198
