Evaluate the expression 7×^2y, when x = 4 and y = 2 A: 112 B: 224 C: 542 D: 718
1 answer:
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Answer:
Note: The expression "h =300- pi r /pi r" would equate to 299, as written. I find h = (300 - π )/πr to be the equation for height.
Step-by-step explanation:
The total surface area of a sylinder is 2πr(h+r) where h is the height and r is the radius. That consists of top and bottom disks, each with an area of π, for a total of 2π
. The side is a continous sheet that has an area of 2πrh, where h is the height. 2πr is the circumference of the can, so the surface area of the side is 2πrh.
The total surace area of a closed cylinder is therefore 2π + 2πrh.
2π + 2πrh = 600
π + πrh = 300
πrh = 300 - π
h = (300 - π )/πr
Answer:
(2y+1)(4y+3a)
Step-by-step explanation:
The given expresion is:
We need to factor by grouping.
Now we cannot factorize further.
Therefore the complete factorization of the given expresion is (2y+1)(4y-3a)