CPhill

Actually, reinout......he lost me at the word "polytropic"...........

What's a "rectangular" carrot ???

Wait a minute...I think I've found it !!!......

√90 = √9 *√10 = 3√10

Would you rather have -$40 or $40 in your checking account ?? Can a negative be greater than a positive??

Lateral SA_cylinder = 2*pi* r * h =  2 * pi * (6cm) * (7cm) = (84 * pi) cm² = 263.89cm²

SA base_cylinder = pi*(r)² = pi (6cm)² = (36*pi) cm² = 113.09cm²

So .....263.89cm²   +   113.09cm²   = 376.98cm² = 377cm²

Oh, yes....I see now....she actually "cheated," didn't she???.......

Shame on you, kitty<3 !!!!!!!!   (LOL!!!)

Thanks, rosala....if someone can type it here.....what prevents them from typing it in the calculator???

Isn't 50% of something just 1/2 of that thing???

See if you can take it from there.......

P(Senior or Female) = P(Senior) + P(Female) - P(Senior  and Female)

P(Senior or Female) = 12/28   + 10/28 -  6/12  = 16/28 = 4/7

3.075 - 1.950 = 1.125 kg