What should the check digit be for the following UPC Code: "01234567890_ " A) 4
B) 5
C) 6
D) 7

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.