The first pump empties half the pond in 3 hours, so in 1/6 that time (1/2 hour), it empties (1/6)·(1/2) = 1/12 of the pond.
The second pump empties the other 5/12 of the pond in that half hour, so has a pumping rate of (1/2 h)/(5/12 pond) = (6/5 h)/pond.
The second pump could do the entire job alone in 1 hour and 12 minutes.
I don't think it really matters if there's a dash there or not
so confusing i really need help with this math
Answer:
Option C (4096π in²)
Step-by-step explanation:
Area of the circle = 256π in²
We know that 
, where r = radius of the circle
So,
Cancelling π from both the sides,
The radius of the circle = 16 in.
When the radius is multiplied with 4 , new radius = 16×4 = 64 in.
New Area = 
You divide 18 with 3 and is going to equal 6 so that should be your constant proportionality
