The surface area of the cylinder= 2 π * r^2
Step-by-step explanation:
The surface area of each end and the surface area of the side of the cylinder are added to get surface area of a cylinder.
We know that each end of the cylinder is a circle.
So the surface area of each end of the cylinder is π * r^2
Here, r is the radius of the end
There are two ends, so their combined surface area= 2 π * r^2
The surface area of the cylinder= 2 π * r^2
Answer:
12x² - 2x - 30
Step-by-step explanation:
When multiplying binomials, remember to follow the FOIL method:
FOIL =
First
Outside
Inside
Last
Follow FOIL: (3x - 5)(4x + 6)
(3x)(4x) = 12x²
(3x)(6) = 18x
(-5)(4x) = -20x
(-5)(6) = -30
Combine like terms, simplify:
12x² + 18x - 20x - 30
12x² + (18x - 20x) - 30
12x² - 2x - 30
12x² - 2x - 30 is your answer.
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Answer:
12x²-2x-30=2(6x²-x-15)
Step-by-step explanation:
(3x-5)(4x+6)=12x²-20x+18x-30=
12x²-2x-30=2(6x²-x-15)
Answer:
No solution
Step-by-step explanation:
-2(y - 4) = 20 - 2y - 12
-2y+8=20-2y-12
-2y+2y=8-8
0=0
No solution