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Liula [17]
3 years ago
12

A tin is a right circular cylinder with a diameter of 4 meters and a height of 6 meters. What is the surface area of this tin, i

n terms of pi?
Mathematics
1 answer:
agasfer [191]3 years ago
4 0

Answer:

32 pi m^2

Step-by-step explanation:

The surface area of a cylinder is given by

SA = 2pi r^2 + 2 pi rh

   The diameter is 4 meters so the radius is 1/2 of the diameter = d/2 = 2 meters

SA = 2 * pi * (2)^2 + 2 pi *2*6

    = 8pi +24pi

   = 32 pi m^2

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Quadrilateral A has side lengths 6, 9, 9, and 12. Quadrilateral B is a scaled copy of Quadrilateral A, with its shortest side of
Alekssandra [29.7K]

Answer:

Look below

Step-by-step explanation:

Ok, you got a Quadrilateral with the side lengths 6, 9, 9, 12

The shortest of B is 2

Find the scale factor of the A to B

6 -> 2

6/2 = 3

Scale factor is 3

Now divide all the sides by scale factor

6/3, 9/3, 9/3, 12/3 = 2, 3, 3, 4

Add them all together to get the perimeter

2+3+3+4 = 12

Perimeter of B is 12

5 0
3 years ago
*Please answer before 5:45! I'll award brainliest!*
FromTheMoon [43]

Answer:

A

Step-by-step explanation:

Vertical angles are angles that are formed by 2 lines and are directly accross from each other. They do not share a ray, however they are always the same number of degrees.

so then the answer would be A, ∠ERT and ∠MRC since they are directly across from each other.

4 0
3 years ago
The value of the square root of -4 is not -2 because?
Anarel [89]

A) (-2)² ≠ -4 is your answer



Explanation:

(-2)² = (-2)(-2)


(-2) x (-2) = 4


∴ A) (-2)² ≠ -4



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7 0
3 years ago
A) 120 is what percentage of 30
scZoUnD [109]

Answer:

a ) 400 percent

b )  n = 25

c)  n= 36

Step-by-step explanation:

Is means equals, of means multiply and percents need to be changed to decimals.

a) 120 is what percentage of 30

120 = P * 30

Divide each side by 30

120/30 =P* 30/30

4 = P

Multiply by 100 to give the percentage

4 * 100

400 percent


b) 30 is 120% of what number

30 = 1.2 * n

Divide each side by 1.2

30/1.2 = 1.2n/1.2

25  = n


c) what number is 30%of 120

n = .3 * 120

n =36


3 0
3 years ago
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Please help to find the HCF and LCM of this question ​
poizon [28]

Step-by-step explanation:

Explanation is in the attachment

<em>H</em><em>ope </em><em>it</em><em> is</em><em> helpful</em><em> to</em><em> you</em>

<em> </em><em> </em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em>

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3 years ago
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