The image on a movie poster was shrunk to make the DVD cover art for the movie, so that the cover art is a scale image of the poster. The poster is 72 inches wide, and the DVD cover art is 6 inches wide. If the diagonal of the poster is 9 feet, what is the diagonal of the DVD cover art?
A. 18 inches
B. 9 inches
C. 8 inches
D. 0.75 inch

b

Step-by-step explanation:

The poster is 12 times larger than the DVD, so divide 9 feet by 12 inches. So, 108 inches divided by 12 inches.

900 degrees

step-by-step explanation:

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a