Water goes over niagra falls at a rate of 180 million cubic feet every 1/2 hour. how much water goes over the falls in 1 minute?

6 million cubic feet

Step-by-step explanation:

180--> 30min(1/2hour)

Divide by 30 to get 1 minute.

180/30 million cubic feet= 6 million cubic feet

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