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3 years ago

I need help ASAP!!!!!! Please tell me how u got your answer

Mathematics

1 answer:

Deffense [45]3 years ago

7 0

Answer:

150.5

Step-by-step explanation:

Use the Surface Area Formula for a Cylinder to find the Surface Area.

SA = 2πrh + 2πr^2 where r = radius and h = height

SA = 2π(3)(5) + 2π(3)^2

SA = 2π(15) + 2π(9)

SA = 2(47) + 2(28.26)

SA = 94 + 56.52

SA = 150.52

Rounded to the nearest tenth = 150.5

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gregori [183]

Answer:

there are more magnets that longer than 2 1/2

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

From the photo, we can see that:

Length of the magnet:

1 inch there is 1 magnet
$1\frac{1}{2}$ inches there are 2 magnets
2 inches there are 3 magnets
3 inches there are 4 magnets
$3\frac{1}{2}$ there is 1 magnet
4 inches there are 2 magnets

=> the total number of magnets that longer than 2 1/2 are: 4+1+2 = 7

=> the total number of magnets that shorter than 2 1/2 are: 1+2+3 = 6

Hence, there are more magnets that longer than 2 1/2

Hope it will find you well.

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maw [93]

Aight let's answer this step by step

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