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Salsk061 [2.6K]
2 years ago
15

Find the surface area to the nearest 10th of a cylinder with a radius of 3 cm and a height of 7 cm use 3.14 for PI

Mathematics
1 answer:
kap26 [50]2 years ago
7 0

The equation for surface area for a cylinder is A=2*PI*r*h+2*PI*r^2

A = 2 * 3.14 * 3 * 7 + 2 * 3.14 * 3^2

A = 131.88 + 56.52

A = 188.4 square cm.

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the sum of nine times a number and fifteen is less than or equal to the sum of twenty four and ten times the number
lana66690 [7]
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8 0
3 years ago
What is 5 x 5 x 5 x 5 in exponential notation?
kramer

Answer:

5^4

Step-by-step explanation:

because 5 is multiplied 4 times

3 0
2 years ago
What is the value of the expression below when w = 3. 4w^2 - 7w - 8
Makovka662 [10]
<h2>Answer:<em> </em><em><u>w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110 </u></em></h2><h2><em><u> w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757</u></em></h2>

Step-by-step explanation:  The prime factorization of  4320   is

  2•2•2•2•2•3•3•3•5  

To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).

√ 4320   =  √ 2•2•2•2•2•3•3•3•5   =2•2•3•√ 30   =

               ±  12 • √ 30

 √ 30   , rounded to 4 decimal digits, is   5.4772

So now we are looking at:

          w  =  ( -40 ± 12 •  5.477 ) / -34

Two real solutions:

w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757

or:

w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110

MY HEAD HURTS!

3 0
3 years ago
What are the zeros of the function f(x)=x2+12x+38
Artemon [7]

Answer:

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6 0
3 years ago
(-3)-(-19) I got -22 am I right?
N76 [4]

Answer:

16

Step-by-step explanation:

the negative outside the parenthesis removes the negative that is with the 19 and it is going to be 19-3 which equal 16


4 0
3 years ago
Read 2 more answers
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