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soldi70 [24.7K]

3 years ago

5

Need help

2 answers:

ira [324]3 years ago

4 0

Formula for the volume of a cylinder is pi radius squared times height so this one would be pi times 25 times 4 which approximately equals 314

Black_prince [1.1K]3 years ago

4 0

The answer is 3.14 cubic units. To get this answer you have to do....

V= TTr2h
V= TT (52) (4)
V= (3.14) (25) (4)
V= 314 cubic unit

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Can please someone help me? The question is in the picture. Thank you

maxonik [38]

Answer:

C. $9\pi$

Step-by-step explanation:

We proceed to solve for $x$ by the Pythagorean Theorem:

$(x+1)^{2} = (x-1)^{2} + (2\cdot x - 4)^{2}$ (1)

$x^{2} + 2\cdot x + 1 = (x^{2}-2\cdot x + 1) + (4\cdot x^{2}-16\cdot x + 16)$

$x^{2} + 2\cdot x + 1 = 5\cdot x^{2}-18\cdot x + 17$

$4\cdot x^{2} -20\cdot x + 16 = 0$

$(2\cdot x)^{2} -10\cdot (2\cdot x) + 16 = 0$

$(2\cdot x -8)\cdot (2\cdot x -2) = 0$

There are two different solutions:

$x_{1} = 4$ , $x_{2} = 1$

A solution of $x$ is considered realistic when the length of every side of the triangle is a not negative number.

$x_{1} = 4$

$UV = 2\cdot (4) - 4$

$UV = 4$

$WU = 4 - 1$

$WU = 3$

$WV = 4 + 1$

$WV = 5$

$x_{2} = 1$

$UV = 2\cdot (1) - 4$

$UV = -2$

$WU = 1 - 1$

$WU = 0$

$WV = 1 + 1$

$WV = 2$

The only realistic set of solutions is for $x = 4$ , and the radius of the circle is represented by the line segment $WU$ : $r = 3$

And the area of the circle ( $A$ ) is calculated from the following formula:

$A = \pi\cdot r^{2}$

$A = \pi\cdot (9)$

$A = 9\pi$

The correct answer is C.

6 0

3 years ago

15% out of 365 days, about how many days can residents predict rain?

Liula [17]

54 days!!!!!!!!!!!!!!!!!!!!!!!!!!!1

5 0

3 years ago

Read 2 more answers

2 questions here. What does the equation of line mean on number 7? And how do I do 8?

ycow [4]

Equation of line is doubling

6 0

3 years ago

Abby is adopting kittens from the pet store. if there are 18 kittens, how many ways can she choose 2 kittens? **the answer isnt

Arturiano [62]

Answer:

153 ways.

Step-by-step explanation:

The answer is the number of combinations of 2 from 18

= 18! / 2! (18-2)!

= 18! / 2! 16!

= 18*17*16! / 2! 16!

= 18 * 17 / 2*1

= 9 * 17

= 153 ways.

7 0

3 years ago

Find the work done in emptying a cylindrical tank filled with water. The water is being pumped out from the 6 top. The tank has

lutik1710 [3]

Answer:

<em>908360.67 lb-ft</em>

<em></em>

Step-by-step explanation:

height of tank= 6 ft

diameter of the tank = 4 ft

density of water p = 62.4 lbs/ft

A is the cross sectional area of the tank

A = $\pi r^{2}$

where r = diameter/2 = 4/2 = 2 ft

A = 3.142 x $2^{2}$ = 12.568 ft^2

work done = force x distance through which force is moved

work = F x d

Force due to the water = pgAh

where g = acceleration due to gravity = 32.174 ft/s^2

Force = 62.4 x 32.174 x 12.568 x 6 = 151393.44 lb

work done = force x distance moved

work = 151393.44 x 6 = <em>908360.67 lb-ft</em>

8 0

2 years ago