Which two-dimensional shape can be rotated about the y axis to create a cylinder which has a smaller diameter than height?

Rectangle

Step-by-step explanation:

If we rotate   a rectangle whose about Y -axis then a cylinder will be generated i.e. a vertical cylinder is generated whose volume is given by

where r= width of rectangle

h=length of rectangle

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

its 50 miles away from the starting point