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bulgar [2K]
4 years ago
11

Find the surface area. Use 3.14 for pie

Mathematics
1 answer:
antoniya [11.8K]4 years ago
6 0

Answer:

3,165.12 square meters

Step-by-step explanation:

To find the surface area of a cylinder, first separate the shapes you must find the area of. In this case, you need to find the areas of two circles and one rectangle (the height).

The two circles can be found using the equation: a = pi(r^2). r means radius!

12 squared is 144, which, multiplied by pi, is 452.16 square units. Because there are two circles, you can multiply this area by two to get the area of both: 904.32.

The rectangle can be found by multiplying the circumference of the circle by the height of the cylinder. The circumference can be found with the equation: c = 2pi(r). The circumference of this cylinder's base is 75.36, which, multiplied by the height of the cylinder, is 2,260.8.

Now that you have both the area of the circles and the side, you can add them both together and get the surface area.

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Step-by-step explanation:

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Solve the proportion. a. 4/x = 9 b. 7.5/26 = 75/p
lina2011 [118]

<u>ANSWER: </u>

The values of x and p after solving given equations are 0.445 or \frac{4}{9} and 260 respectively..

<u>SOLUTION: </u>

Given, two proportions are \frac{4}{x} =9 and \frac{7.5}{26} = \frac{75}{p}

We need to solve the given two proportions.

Let us solve the first proportion, \frac{4}{x} = 9

\frac{4}{x} = \frac{9}{1}

On cross-multiplication, we get

4 \times 1 = 9x

4 = 9x

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Now, let us solve the second proportion  \frac{7.5}{26} = \frac{75}{p}

\frac{\frac{75}{10}}{26}=\frac{75}{p}

\frac{75}{10 \times 26} = \frac{75}{p}

\frac{1}{260} = \frac{1}{p}

On cross-multiplication, we get

p = 260

Hence, the values of x and p after solving given equations are 0.445 and 260 respectively.

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