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3 years ago

8

The ratio of the surface area of two cylinders is 1:9. The smaller cylinder has a radius of 3 inches and a height of 4 inches. W

hat are the dimensions of the larger cylinder?

1 answer:

lana66690 [7]3 years ago

3 0

You need to multiply them 3-4 and get 12 so that's part of your answer

then you make it 12:9.

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HELP ME PLZZZZ!!!!!!!!!!!!!!!!!!

Alekssandra [29.7K]

the radius of the distance between the middle point of the circle and the outside, we have the diameter which is 6 so the <u>radius will be 3</u>

slant height is

$\sqrt{r^2+h^2}$

h is 4.7 and r is 3

$\sqrt{3^2+4.71^2} \\5.58427$

<u>slant height is 5.58427</u>

lateral surface area

$\pi r\sqrt{h^2+r^2}$

$\pi (3)\sqrt{4.71^2+3^2} \\52.63053$

<u>lateral surface area is 52.63053</u>

total surface area

$\pi r(r+\sqrt{h^2+r^2})$

$\pi 3(3+\sqrt{4.71^2+3^2})$

$80.90486$

<u>total surface area is 80.90486</u>

8 0

3 years ago

12 is what percent of 19

VikaD [51]

Answer:

63%

Step-by-step explanation:

12/19=0.63157895

0.63157895*100=63.1578947

7 0

3 years ago

fernando walked his dog 2/10 mileon saturday and 60/100 mile on Sunday. How far did he walk his dog in all?

Vlad [161]

4/5 a mile

2/10 time 10=20/100
20/100+ 60/100=80/100 or 4/5

6 0

3 years ago

Read 2 more answers

I need help with this question

lina2011 [118]

Ratio: 3/4 : 1/2

We can also write this as:

3/4 / 1/2

Flip the 2nd fraction and multiply:

3/4 * 2/1

Multiply the numerators and denominators together:

6/4

Simplify:

3/2

8 0

4 years ago

Read 2 more answers

Bianca reads 3/4 of a page of a book each minute. She has 25 pages left to read. How many pages will she read in 5 1/2 minutes?

Viktor [21]

Answer:

Bianca reads a page of a book in 1 ÷ (3/4) = 1 x (3/4) = 4/3 minutes;

We have 5 1/2 = 11/2 minutes;

She reads (11/2) ÷ (4/3) = (11/2) x (3/4) = 33 /8 = 4 1/8 pages;

Step-by-step explanation:

3 0

4 years ago