1/3 x 8 in simplest form

What is the exact volume of the cylinder? 16in going into the middle of the top of the cylinder and 40in in height a) 25,600(pi)3 b)10,240(pi)3 c)1280(pi)3 d)640(pi)3

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?