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JulijaS [17]
2 years ago
14

Use the net below to determine the surface area of the cylinder. (Use 3.14 for π.) 640.56 cm^2 339.12 cm^2 753.6 cm^2 512.56 cm^

2

Mathematics
1 answer:
Elena L [17]2 years ago
8 0

Answer:

<u>The correct answer is C.  753.60 cm²</u>

Step-by-step explanation:

Let's recall that the formula for the surface area of a cylinder is:

S = 2πrh + 2πr²

r = 6

h = 14

Replacing with the values we know:

S = 2 * 3.14 * 6 * 14 + 2 * 3.14 * 6²

S = 527.52 + 226.08

<u>S = 753.60 cm²</u>

<u>The correct answer is C.  753.60 cm²</u>

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the side is in the shape of a rectangle with an area of 437 square centimeters the length of the rectangle is 19 centimeters wha
miss Akunina [59]
The area of the rectangle is length times width, that is
A = L*W
The problem requires the width so
W = A/L
Given that A = 437 sq. cm and L = 19 cm, therefore
W = 437/19 = 23 cm

That is the answer.
5 0
3 years ago
In factored form please help
Brilliant_brown [7]

Answer:

3rd option

Step-by-step explanation:

\frac{3x^2-3}{x^2-5x+4} ( factorise numerator and denominator )

3x² - 3 ← factor out 3 from each term

= 3(x² - 1²) ← x² - 1 is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

x² - 1

= x² - 1²

= (x - 1)(x + 1) , then

3x² - 3 = 3²(x - 1)(x + 1) ← in factored form

--------------------------------

x² - 5x + 4

consider the factors of the constant term (+ 4) which sum to give the coefficient of the x- term (- 5)

the factors are - 1 and - 4 , since

- 1 × - 4 = + 4 and - 1 - 4 = - 5 , then

x² - 5x + 4 = (x - 1)(x - 4)

then

\frac{3x^2-3}{x^2-5x+4} = \frac{3(x-1)(x+1)}{(x-1)(x-4)} ← in factored form

3 0
1 year ago
Choose a variable to isolate and what it is equal to in the system of equations below
Alinara [238K]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
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Answer:

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Step-by-step explanation:

slope is: (delta y)/(delta x)

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8 0
2 years ago
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lbvjy [14]

Answer:

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Refer below.

Step-by-step explanation:

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50x=28000

X=560

7 0
3 years ago
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