The formula for volume of a cylinder is V=

r^2h, where V= volume, r=radius, and h=height. So we plug in your numbers and get (3.14)(1.5)^2(4), which equals 28.26 cubic feet. We have a bucket that holds 0.34 cubic feet, so we need to fill it 28.26/0.34 times, which equals about 83.118 times. If she can fill the bucket five times in three minutes, we set up a ratio 3/5 = 83.118/x so 5x=249.3529, and x=49.87 minutes.
Answer:
James Watt- steam engine with condenser- used much less coal than earlier engines.
Henry Bessemer- Industrial process for steel production- made it cost efficient to produce steel from molten iron on a large scale.
Eli Whitney- Cotton gin- Allowed fibre to be extracted from seed more efficiently.
:)