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3 years ago

How to find the volume of a cylinder

Mathematics

2 answers:

Kryger [21]3 years ago

5 0

Cylinder volume formula:

$V=\pi r^2h$

This is just the area of the circle ( $\pi r^2$ ) multiplied by the height of the cylinder.

katrin2010 [14]3 years ago

5 0

Answer:

V=^2h

Step-by-step explanation:

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in the figure below trianglePQM and triangleQRP are right triangles. the measure of lineQM is 6 and the measure of lineQP is 8.

Kipish [7]

Answer:

Option 4 is correct. The length of PR is 6.4 units.

Step-by-step explanation:

From the given figure it is noticed that the triangle PQR and triangle MQR.

Let the length of PR be x.

Pythagoras formula

$hypotenuse^2=base^2+perpendicular^2$

Use pythagoras formula for triangle PQM.

$PM^2=QM^2+PQ^2$

$PM^2=(6)^2+(8)^2$

$PM^2=36+64$

$PM^2=100$

$PM=10$

The value of PM is 10. The length of PR is x, so the length of MR is (10-x).

Use pythagoras formula for triangle PQR.

$PQ^2=QR^2+PR^2$

$(8)^2=QR^2+x^2$

$64-x^2=QR^2$ .....(1)

Use pythagoras formula for triangle MQR.

$MQ^2=QR^2+MR^2$

$(6)^2=QR^2+(10-x)^2$

$36=QR^2+x^2-20x+100$

$36-x^2+20x-100=QR^2$ .... (2)

From equation (1) and (2) we get

$36-x^2+20x-100=64-x^2$

$20x-64=64$

$20x=128$

$x=6.4$

Therefore length of PR is 6.4 units and option 4 is correct.

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2 years ago

Is 1.202 meters longer than 1.29 meters?

Elena L [17]

No it's longer because 1.29 is bigger

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2 years ago

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2 years ago

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Korvikt [17]

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Step-by-step explanation:

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2 years ago

How to find the volume of a cylinder ​

How to find the volume of a cylinder