Question

I don't know the answer can someone pls help me

Answer 1

The formula for your situation is this:

`n^(2) =PN(PN+MN)`
where your PQ is
`n^(2)`
So our formula, filled in and solving for PQ is this:

`n^(2)=11.5(11.5+24)`
and
`n^(2) =11.5(35.5)`
and n = 20.2 or 20 rounded. That's the last choice above

Answer 2

line QP =

11.5*(11.5 +24) = 11.5 * 35.5 = 408.25

SqRT(408.25) = 20.205

round answer to 20 units