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Lyrx [107]
3 years ago
5

Evaluate the expression x=-4.9 and y=-1.3 -5x+7y

Mathematics
1 answer:
Flura [38]3 years ago
8 0

Answer:

15.4

Step-by-step explanation:

-5×(-4.9) +7×(-1.3)

=24.5+(-9.1)

=24.5-9.1

==15.4

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ryzh [129]

Based on the calculations, the surface area (SA) of a cylinder is equal to: B.  2,813.44 in.²

<h3>How to calculate surface area of a cylinder?</h3>

Mathematically, the surface area (SA) of a cylinder can be calculated by using this formula:

SA = 2πrh + 2πr²

<u>Where:</u>

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  • r is the radius.

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Read more on surface area here: brainly.com/question/26396269

#SPJ1

<u>Complete Question:</u>

If the dimensions of the following cylinder are doubled, what will be the surface area of the new cylinder? Radius: 8 in and Height: 6 in.

Group of answer choices.

A. 1,406.72 in.²

B.  2,813.44 in.²

C. 1,607.68 in.²

D. 5,626.88 in.²

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