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julia-pushkina [17]
2 years ago
10

Please help me someone

Mathematics
1 answer:
maks197457 [2]2 years ago
6 0

Answer:

For the cylinder shown in picture:

Perimeter of base = 2 x pi x radius = 2 x pi x 9 = 18pi

=> The area of label = perimeter of base x height = 18pi x 13 = 234pi =~735.1

Area of base = pi x radius^2 = pi x 9^2 = 81pi

=> The surface area of cylinder

S = base area x 2 + area of label = 81pi x 2 + 234pi = 396pi =~1244.1

Hope this helps!

:)

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Find the surface area of the cylinder in terms of pi
tia_tia [17]

Answer:

<u>A≈301.44</u>

Step-by-step explanation:

The area of a cylinder is A=2πrh+2πr^2

You first do the first problem of the equation (A=2πrh)

You fill in the radius and height ( A=2π(4)(8) )

You first multiply 4 x 8 = 32. ( A=2π(32) )

Then you multiply 2 x 32 = 64. ( A=π(64) )

Then you multiply π x 64 (using 3.14 for π) = 200.96 m^2

You then do the second part of the equation. (A=2πr^2)

You fill in the radius. (A=2π(4)^2)

Then multiply 4 x 4 = 16 (because it's to the power of 2 [4 times itself twice]) and then multiply it by 2.

16 x 2 = 32. ( A=π(32) )

Next you just multiply 32 x π (using 3.14 for π again) = 100.48 m^2.

Then you just add them together:

200.96 m^2 + 100.48 m^2 = 301.44 m^2

So <u>301.44 m^2</u> is your answer.

(I hopefully think it is.)

5 0
2 years ago
Read 2 more answers
Simplify the expression: (3 − 7i)(2 − 5i).
Mandarinka [93]

Answer:

B

Step-by-step explanation:

3x2-3x5i-7ix2x7ix(-5i)

6-15i-14i+35i^2

6-15i-14i+35x(-1)

6-15i-14i-35

3 0
3 years ago
Three baseball players are playing catch. Philip is directly south of Barbara and directly west of Savannah. Philip and Savannah
Kitty [74]
Philip and Barbara are 8 meters apart because 5+3=8 so it will make 8 meters
4 0
2 years ago
4x-1=y graphed by using a table
olasank [31]

Answer:

It can be many answers since it’s on a graph

Step-by-step explanation:

That equation isn’t the rule so test it out on number so and you will get point to put on a graph

5 0
3 years ago
The length of one side of a square is (x + 2 1/4). If the perimeter is 14 units, what is the area?
Stels [109]

The perimeter is the total of adding all of the side lengths together.

A square has 4 equal side lengths.

So the perimeter of a square is:

P = s + s + s + s  or  P = 4s

[P = perimeter       s = side lengths of the square]


Since you know the side length of the square is (x + 2 1/4), you can replace s with (x + 2 1/4)

P = 4s

P = 4(x + 2 1/4)  Multiply 4 into (x + 2 1/4)

P = 4x + 8 4/4

P = 4x + 9

Since you know the perimeter, you can plug it in.(you could have also plugged it in in the beginning)

P = 4x + 9

14 = 4x + 9  Subtract 9 on both sides

5 = 4x  Divide 4 on both sides

5/4 = x


Now that you know x, find the side length of the square.

(x + 2 1/4)

(5/4 + 2 1/4)

2 6/4 = 3 2/4 = 3 1/2 units or 3.5 units


To find the area of a square, you multiply 2 of the sides together:

A = s · s  

A = 3.5 · 3.5

A = 12.25 units²

7 0
2 years ago
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