a metal disc 12cm in diameter and 5cm thick is melted down and cast into a cylindrical bar of diameter 5cm .how long is the bar?​

Me! last question, and i'm stuck! write the algebraic expression that models the word phrase. the product of 2 divided by the number h and 8 more than the number k

Find the area of a parallelogram with base 15 yards and height 21 2/3

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k