We know that
[surface area of a sphere]=4*pi*r²
r²=surface area/(4*pi)
r=√[surface area/(4*pi)]
surface area=450 in²
r=√[450/(4*pi)]------> r=5.98 in------------> r=6 in
the answer is
r=6 in
I believe the question is saying - Confetti is dropped at x height and a person stands at y high, whats the difference between x and y. If the confetti falls at z speed, how long does the person have to wait until the confetti has fallen, to unsure he does not get hit.
Not entirly sure and can't work it out 100% as i would need all tables, charts and questions.
A) 125 mm3 v=bh
v=(5*5/2)*10
Sry there is no answer well actually the answer has an infinite amount of answers but you can't just pick one and say that's that and this is with all of them... sorry
