Solve the proportion for x.
5/6=x/90

supporting work

15/90

Step-by-step explanation:

90 divided by 6= 15 so 5 times 15=15

75

Step-by-step explanation:

5/6=x/90:

5*90=450:

450/6=75

OR

90/6=15:

15*5=75

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