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Mashutka [201]
3 years ago
10

Use a net to find the surface area of the open cylinder with only one base. Use 3.14 for pi.

Mathematics
1 answer:
Mandarinka [93]3 years ago
3 0

Answer:

251.20 cm square

Step-by-step explanation:

As given in figure

height of cylinder = 2 cm

radius of cylinder = 8 cm

lateral surface area of cylinder is given by = \pi r l

where r is the radius and l is the height

Therefore, lateral surface area of given cylinder

\pi r l = 3.14*8*2 = 50.24

area of base is give by \pi r^2

since there is only one base area of that base

= \pi r^2 = 3.14*8^2 = 3.14*64 = 200.96

Thus,

Total surface area of open cylinder = 50.24 + 200.96 = 251.20 cm square

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12x + 2y =6a. solve for yb. what is the slope and what is the y-intercept?
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The equation of a line in the slope intercept form is expressed as

y = mx + c

where

m represents slope

c represents y intercept

The given equation is

12x + 2y = 6

we would make this equation to look like the slope intercept equation.

12x + 2y = 6

If we subtract 12x from both sides of the equation, it becomes

12x - 12x + 2y = 6 - 12x

2y = 6 - 12x

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Dividing both sides of the equation by 2, it becomes

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1 year ago
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3 years ago
Helppp can someone solve this please
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Answer:

\displaystyle x=-15

Step-by-step explanation:

<u>Solution Of A System Of Equations </u>

A system of linear equations is given as

\displaystyle \left\{\begin{matrix}ax+by=c\\ dx+ey=f\end{matrix}\right.

There are many methods to solve them. We will use the method of reduction

The given system is

\displaystyle \left\{\begin{matrix}2x+3y=45\\ x+y=10\end{matrix}\right.

Multiplying the second equation by -3

\displaystyle \left\{\begin{matrix}2x+3y=45\\ -3x-3y=-30\end{matrix}\right.

Adding the resulting equations

\displaystyle -x=15

\displaystyle x=-15

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