#2**+5 **

As an afterthought....maybe the patio does not include the pool area and hot tub area?

THEN the area becomes

the previous finding for the entire area MINUS the pool and hot tub areas

pool area = (6x-14)(2x) = 12x^2-28x

hot tub area = x * x = x^2

Subtract these from our previous area ( 32x^2-40x)

32x^2 - 40 x - (12x^2 -28x) - (x^2)

32x^2 - 12x^2 - x^2 - 40x + 28x = 19x^2 - 12x = 'patio' area w/out pool and hot tub areas

Then if x= 9 area =19*81-12*9 = 1431 and cost 1431sqft x $10/sqft =$14310

ElectricPavlov Jan 22, 2017

#1**+5 **

Area is defined as L x W L as shown in the picture is 8x -10

W = 2x (wall) + 2x (pool) = 4x

so L * W = (8x-10) (4x) = 32x^2 - 40x = Patio Area

Then substitue 9 for x to get the second answer...... (32*81-40*9 = 2232 sq ft

2232 sqft x $10 /sqft = $22320

ElectricPavlov Jan 22, 2017

#2**+5 **

Best Answer

As an afterthought....maybe the patio does not include the pool area and hot tub area?

THEN the area becomes

the previous finding for the entire area MINUS the pool and hot tub areas

pool area = (6x-14)(2x) = 12x^2-28x

hot tub area = x * x = x^2

Subtract these from our previous area ( 32x^2-40x)

32x^2 - 40 x - (12x^2 -28x) - (x^2)

32x^2 - 12x^2 - x^2 - 40x + 28x = 19x^2 - 12x = 'patio' area w/out pool and hot tub areas

Then if x= 9 area =19*81-12*9 = 1431 and cost 1431sqft x $10/sqft =$14310

ElectricPavlov Jan 22, 2017