Help with math please:)

63 un²

Step-by-step explanation

Formula for Triangle = 1/2(b*h)

Lets input our numbers

b(base) = 21

h(height) = 6

Lets multiply

1/2(6 x 21) =

1/2(126) = 63

Now add the units

63 un²

2.

according to newton’s cannonball model, what happens if the cannonball's velocity is enough to overpower the pull of earth’s gravitystep-by-step explanation:

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