Answer:
-8 and 1
Step-by-step explanation:
Answer:
Surface area of cone is 
Step-by-step explanation:
Given:
radius of a cone (r) = 8 feet
slant height of cone (l) = 12 feet
We need to find the surface area of cone.
Total surface area of cone = Area of circle
Area of curved surface
Now we know that,
Area of circle = 
Area of curved surface = 
Hence Total surface area of cone = 
Surface area of cone is
.
Answer:
or 
Step-by-step explanation:
Step 1: Factor left side of equation: 
Step 2: Set factors equal to 0:
or 
Get your answer:
or 