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3 years ago

HELP!!!! Due in 1 hour.

Mathematics

1 answer:

IrinaK [193]3 years ago

6 0

Answer

these nut in you'er mouth

Step-by-step explanation:

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B) The number of volume of a cylinder is half of its number of the total surface area.

faust18 [17]

Answer:

$V=179.6cm^3$

Step-by-step explanation:

the volume of a cylinder is given by:

$V=\pi r^2h$

where r is the radius and h is the height.

and the surface area:

$SA=2\pi r^2+2\pi rh$

the first term is the area of the circles and the second term is the area of the body.

since "The number of volume of a cylinder is half of its number of the total surface area." we will have that:

$V=\frac{1}{2}SA$

substitutig the equivalent expressions on each side:

$\pi r^2 h = \frac{1}{2} (2\pi r^2+2\pi r h)$

and we simplify and solve for the height (since is the value we don't know of the cylinder):

$\pi r^2 h = \pi r^2+\pi r h\\\pi r^2h-\pi rh=\pi r^2\\h(\pi r^2-\pi r)=\pi r^2\\h=\pi r^2/(\pi r^2-\pi r)$

we substitute the value of the radius $r=7cm$ , and we get:

$h=\pi (7cm)^2/(\pi (7cm)^2-\pi (7cm))\\h=153.938/(153.938-21.991)\\h=153.938/131.947\\h=1.1666cm$

thus the volume is:

$V=\pi r^2h$

$V=\pi (7cm)^2(1.1666cm)\\V=179.6cm^3$

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3 years ago

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Please Help!<br> Evaluate 5v+w for v=4 and w=16

Harrizon [31]

Answer:

20+16= 36

Step-by-step explanation:

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3 years ago

You randomly survey men and women about whether they plan to watch a football game on Sunday afternoon. A total of 40 men plan t

Alecsey [184]

Answer: 101

Step-by-step explanation:

45 women total

17 women will not watch the game

So 33 people did not want to watch the game and 17 are women

33-17 = 16 men who won’t watch the game

So 40 men who will and 16 men who won’t equals 56 men and 45 women

56+45= 101

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What equation has the solution x= 5+2 square root of 7 divided 3

Paraphin [41]

Put it in the calculator and the answer is 3.4305

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3 years ago

Find the LCM (least common multiple) of 15 and 8.<br><br> LCM =

vaieri [72.5K]

Answer:

120

Step-by-step explanation:

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3 years ago

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