Answer:
A) 12,5651 feet/hour
B) 12,5663 feet/hour
Step-by-step explanation:
A) Being
f
the amount of water distributed at a distance r. But, the total amount of water distributed inside a circle of radius r , is the sum of all the water distributed from 0 until r. That is
B) the total ammount of water that goes out of the sprinkler will be distributed to different distances according to f(r) , therefore it will be the sum of all the ammount of water at all the distances.
60 square feet for 287 = 287/60 = 4.78 per square foot
so ur equation would be : y = 4.78x + 80....where x is the number of square feet and y is the total cost
It would be: 3 * 0.53 = 1.59
In short, Your Answer would be 1.59 lbs
Hope this helps!
just multiply 12 times 4. thats 48. so 48 divided by 4 is 12