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3 years ago

Please help with this question

Mathematics

1 answer:

puteri [66]3 years ago

4 0

The answer i found to be is C

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A right cylinder has a radius of 6 m and a surface area of 84 m². Find the surface area of a similar cylinder with a radius of 2

dlinn [17]

Answer:

The surface area of the second cylinder is equal to $9.33\ m^{2}$

Step-by-step explanation:

we know that

If two figures are similar then

the ratio of their surfaces areas is equal to the scale factor squared

Let

z-------> the scale factor

x------> the surface area of the smaller cylinder (second cylinder)

y-------> the surface area of the original cylinder (first cylinder)

$z^{2}=\frac{x}{y}$

Step 1

Find the scale factor

$z=\frac{2}{6}=\frac{1}{3}$

Step 2

Find the surface area of the second cylinder

we have

$z=\frac{1}{3}$

$y=84\ m^{2}$

substitute and solve for x

$(\frac{1}{3})^{2}=\frac{x}{84}$

$x=\frac{1}{9}*84=9.33\ m^{2}$

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3 years ago

8x-4+6x+15<br> I’ll give brainliest <br> if you answer!

guapka [62]

Answer:

14X + 11

Step-by-step explanation:

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3 years ago

Pls Find the value of X <br> (with explanation)

goldenfox [79]

In this problem, we need to use some <u>division</u>.

To find the value of x, divide 4 from 80, and we get:

80 ÷ 4 = 20

The final answer is:

To verify the answer, we need to multiply:

20 × 4 = 80

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2 years ago

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Sati [7]

Answer:

Only two options are CORRECT!

L is the midpoint of a segment in the diagram.

and option (a)

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If (A:20:4:16) is a proportion the find out the value of A fastly

vladimir2022 [97]

Answer: A = 5

Step-by-step explanation:

I'll rewrite this as fractions.

$\frac{A}{20}=\frac{4}{16}$

Solve for A,

$A=\frac{20*4}{16}\\ A=\frac{80}{16}$

$A=5$

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4 years ago