Respuesta :

so in question 7 its says b=25 a=40 and if a+b=c^2 then 40+25=65 and since its c^2 or c squared you want to take 65 dividend by 2 so 32.5 
For the first question, the answer is b=69.3.
The second answer is c=80.
And for the final answer c=30.5.