Robert is in charge of the community swimming pool. each spring he drains it in order to clean it. then he refills the pool, which hold 120,000 gallons of water. robert fills the pool at a rate of 10 gallons each minute. what is the rate at which robets will full the pool? is is constant?

Robert will fill the pool in 200 hours at a constant rate.

Step-by-step explanation:

120000 divided by 10 is 12000, then you divide that by 60 to go from the number of minutes to hours which equals 200. It's at a constant rate because it's 10 gallons PER minute.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2