Radius = 10 feet what is the area in square feet

314.2 ft²

Step-by-step explanation:

"Radius" tells us that there's a circle, but next time please be sure to use that word:  Find the area of the circle whose radius is 10 ft.

The formula for that is A = πr².  Here, with r = 10 ft,

A = π(10 ft)² =  100π ft², or 314.2 ft²

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you