Answer:
20
Step-by-step explanation:
My guess would probably be A = 21
Answer:
About 733.04 feet
Step-by-step explanation:
Volume of Cone is given by the formula 
Where
- V is the volume
- r is the radius
- h is the height
Given height as 7 ft, and radius is 10 feet (Radius is half of diameter(20))
<em>Substituting into formula, we get:</em>
ft
Solving steps:
3x - 9y = -18
divide both sides by 3
3x - 18 + 9y
therefore, x = 6+3y
We cannot solve this further, therefore x = 6 + 3y