the height of the triangle is 4cm and the base width is 18 cm and the base length is 18 cm what is the surface area of a square pyramid

The surface area is 664 cm²

Step-by-step explanation:

         Use this equation to find the surface area

  Simplify

      Simplify

A = 324 + 36√81 + 16         Simplify

A = 324 + 36(9) + 16           Simplify

A = 324 + 324 + 16             Simplify

A = 664 cm²

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