Please help me on one math question thanks !

Ответ:

kingsqueen883

25.01.2022

A. (-22, 17)

Step-by-step explanation:

M is the midpoint, so is calculated as ...

M = (L +N)/2

Solving for L, we find ...

2M = L +N

L = 2M -N

L = 2(-12, 6) -(-2, -5) = (2(-12)-(-2), 2(6)-(-5)) = (-24+2, 12 +5)

L = (-22, 17)

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jerz445

17.01.2020

Hello!

the answer is:

the correct option is the option b.

$surfacearea=126\pi units^{2}$

why?

to calculate the surface area of the right cylinder, we need to use the following formula:

$surfacearea=2\pi rh+\pi r^{2}$

from the picture we know that:

$h=2units\\r=7units$

so, substituting and calculting we have:

$surfacearea=2\pi rh+\pi r^{2}surfacearea=2*\pi *7*2+2*\pi *7^{2}=28\pi + 98\pi =126\pi units^{2}$

hence, we have that the correct option is the option b.

$surfacearea=126\pi units^{2}$

have a nice day!

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