3 years ago

Find an expression for the total surface area of the cylinder.

Mathematics

1 answer:

kolbaska11 [484]3 years ago

8 0

Answer:

2×π×(1/2)L×L+2×π×((1/2)L)^2

Step-by-step explanation:

perimeter of cross-section × height +2× area of cross-section

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3 years ago

Write an equation for the line perpendicular to 4x - 12y = 2 and passing through point (10, -1)

MrMuchimi

Answer:

3x+y=-31

Step-by-step explanation:

$4x - 12y = 2\\12y = 4x-2\\y=\frac{x}{3}-\frac{1}{6}$

Slope of perpendicular line is -3.

$y=-3x+b$

Sub in the point (10, -1)

$-1=-3(10)+b\\-1=30+b\\b=-31\\y=-3x-31\\3x+y=-31$

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3 years ago

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svlad2 [7]

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x^2 + 3x - 4

Step-by-step explanation:

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3 years ago

Need help with this question, thank you in advance!

blondinia [14]

Answer:

arc RP = 84 degrees

Step-by-step explanation:

If the angle NPQ is 102 degrees, we can find the angle NPM:

NPM + NPQ = 180

NPM + 102 = 180

NPM = 78 degrees.

Now, with the triangle NPM, we can find the angle MNP:

60 + 78 + MNP = 180

MNP = 180 - 60 - 78 = 42 degrees

The angle MNP is inscribed in the circle, and is related to the arc RP:

arc RP = 2 * MNP

arc RP = 2 * 42 = 84 degrees

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3 years ago

Find an expression for the total surface area of the cylinder.​

Find an expression for the total surface area of the cylinder.