40 x $6=$240
<span>6.5 x $9=$58.50 </span>
<span>8 x $ 12=$ 96 </span>
<span>Answer $394.50</span>
Volume of a cone = (1/3) * Area of Base * height
144 * 3 / 9 = Area of Base
Area of the Base = 48
Answer:

Step-by-step explanation:
<em><u>SLOPE FORMULA:</u></em>

Y₂=(-15)
Y₁=(-16)
X₂=(-7)
X₁=19
Solve.

So, the slope is 1/26.