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2 years ago

Round 2,641 to the nearest thousand

Mathematics

2 answers:

elena-14-01-66 [18.8K]2 years ago

7 0

It would be 3,000 as it is the next thousand. Since 2,641 is over 2,500 you can round to the next thousand 3,000

Vesna [10]2 years ago

3 0

Answer: 2,641⇒3,000

Step-by-step explanation:

2 6 4 1

Thousand Hundred Ten one

------------------------------------------------------------------

<u>Question:</u>

Round 2,641 to the nearest thousand

<u>Solve:</u>

When the number is less than 5, you move down

When the number is greater or equal to 5, you move up

2 is the thousands place

the number before 2 is 6 on the hundreds place

6 is greater than 5, so you move up

Hope this helps!! :)

Please let me know if you have any questions

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A cylindrial hole is cut through the cylinder below.

Vika [28.1K]

Answer:

V=1884 Cubic mm

Step-by-step explanation:

We know that the volume of the Sphere is given by the formula

$V= \pi r^2h$

Where r is the radius and h is the height of the cylinder

We are asked to determine the radius of the hollow cylinder , which will be the difference of the solid cylinder and the cylinder being carved out.

$V=V_1-V_2$

$V=\pi r_1^2 \times h-\pi r_2^2 \times h$

$V=\pi \times h \times (r_1^2-r_2^2)$

Where

$V_1$ is the the volume of solid cylinder with radius $r_1$ and height h

$V_2$ is the volume of the cylinder being carved out with radius $r_2$ and height h

where

$r_1 = 7$ mm ( Half of the bigger diameter )

$r_2 = 5$ mm ( Half of the inner diameter )

$h=25$ mm

Putting these values in the formula for V we get

$V=\pi \times 25\times (7^2-5^2)$

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2 years ago