What is the surface area of a cylinder with base radius 2 and height 5? Either enter an exact answer in terms of \piπpi or use 3.14, for \piπpi and enter your answer as a decimal.

Surface Area of the cylinder is Or 87.92 square units.

Step-by-step explanation:

Given:

radius = 2

height = 5

We need to find the surface area of the cylinder.

Solution:

Now we can say that;

Surface Area of the cylinder is given by the formula.

Now Substituting the given values we get;

Hence Surface Area of the cylinder is Or 87.92 square units.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.