Answer:
total area=lb=
where l=8x-10
b=2x+2x=4x
area=4x(8x-10)=32x^2-40x..........(1)
now..area of hot tub=x^2=lb
area of pool=lb=2x(6x-14)=12x^2-28x
area of patio = total area - area of hot tub and pool
A=32x^2-40x-x^2-12x^2+28x=(19x^2-12x) feet.....ans
