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patriot [66]
3 years ago
9

Need help with # 1 & 3 please!!!!

Mathematics
1 answer:
elena55 [62]3 years ago
8 0

1) Around $0.11

2) Around 176.71 in^2

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Using the rule y= 3x + 4, find the value of y when xis 2.
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Step-by-step explanation:

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Martina is currently 14 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey. How old is Martina? How
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Find the service area of a cylinder with a base diameter of 6ft and height of 4ft
tatiyna

The service area of the cylinder is 42\pi square fts.

<h3>What is cylinder?</h3>

Two parallel bases joined by a curving surface make up the three-dimensional solid known as a cylinder.

Typically, the bases are shaped like circles. The height "h" of the cylinder stands for the perpendicular distance between the bases, while "r" stands for the cylinder's radius.

The uses of cylinder are-

  • A popular piece of scientific equipment used to determine the volume of a liquid is a graduated cylinder, sometimes referred to as a measuring cylinder or mixing cylinder.
  • Its form is slender and cylindrical. The measured amount of liquid is shown by each marked line on the graduated cylinder.

Total surface area of the cylinder formula:

It is the sum of the base surface area and the lateral surface area;

Total area = base area + lateral area , or

Total area = 2 π r² + (2 π r) h , or

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Calculation for the total area of the cylinder;

Base diameter is 6 ft

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Height is 4 ft

Total area = 2\pi3(3 + 4)

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Therefore, the total surface area of the cylinder is 42\pi square fts.

To know more about the surface area of the cylinder, here

brainly.com/question/10332927

#SPJ4

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Are the triangles congruent ?
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