Tamara needs to buy motor oil to fill 3 empty cylindrical barrels at her oral service center. each barrel is 7 ft deep and has a radius of 4 ft. what is the volume of that oil needed? use 3.14 for n.

1055.04 square feet

Step-by-step explanation:

We know that Tamara needs to buy motor oil to fill 3 empty cylindrical barrels and each barrel is 7 feet deep and has a radius of 4 ft.

We are to find the total volume of oil needed.

To find that, we will find the volume of a cylinder and multiply it by 3:

Volume of cylindrical barrel = 1055.04 square feet

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