Acylindrical cardboard tube with a diameter of 8 centimeters and a height of 20 centimeters is used to package a gift. what is the approximate volume of the tube? round to the nearest whole cubic centimeter.
1,005 cm3
1,340 cm3
3,351 cm3
4,021 cm3

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis