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lesantik [10]
3 years ago
7

Am I right??????????????

Mathematics
2 answers:
zubka84 [21]3 years ago
7 0
No its the last one :)))))
yaroslaw [1]3 years ago
3 0
Yes, your answer is correct.
Hope this helps
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NEED ASAP NEED TO RURN IN FAST!!! WILL MARK *BRAINLIEST*
Travka [436]

Answer:

B

Step-by-step explanation:

We know that:

-measuring a cone
-diameter: 18 units
-height: 8 units

We need to know how to find the volume of this cone. To do this, we need the equation to find the volume of a cone:
V= \pi r^2\frac{h}{3}                   where r=radius and h=height

Upon assessing this equation we also now know that we are missing a radius.

For a circle, the radius is the distance from the midpoint, center, to the border of the circle. The diameter is the distance from the border of one circle to another, passing through the midpoint. Knowing this, we can conclude that the diameter is two times the radius.

Using this information we can figure out the radius for this cone: 9 units.

Now that we have the radius, we can plug in the rest of the numbers with the correct placements.

V= \pi 9^2\frac{8}{3}                    square the 9 by calculating 9 times 9.

V=\pi*81*\frac{8}{3}             combine like terms and keep pi separate.

V=216\pi cubic units
Since this problem is asking for volume, we will used cubic units.

6 0
2 years ago
Read 2 more answers
380% of what is 99? (Round to the nearest whole number)
scoray [572]

Answer:

  • 26

Step-by-step explanation:

<u>Let the number be x</u>

  • 380% of x is 99
  • x*3.8 = 99
  • x = 99/3.8
  • x = 26 rounded to the nearest whole number
6 0
3 years ago
Read 2 more answers
Consider a propeller driven aircraft in forward flight at a speed of 150 mph: The propeller is set up with an advance ratio such
meriva

a)  The thrust of the propeller is  23,834 lbf

b)  The induced velocity is 8.44 mph

c)  The velocity in the downstream far field away from the propeller disc     is 161.56 mph

d) The power absorbed by the fluid is  42.7 hp

e)  the propeller power (thrust flight speed) is  4,844.08 hp

f)  The propeller efficiency is 113.6%

a)The thrust of the propeller can be calculated using the equation,

Thrust = 2πρR^2V^2, where ρ is the air density, R is the propeller radius, and V is the average velocity of the propeller disc. For sea level at a speed of 150 mph, the air density is about 0.002377 slugs/ft^3.

the thrust of the propeller can be calculated as: Thrust = 2π x 0.002377 x (6 ft)^2 x (170 mph)^2 = 23,834 lbf

b)The induced velocity can be calculated using the equation v_ind = (1/2) V ∞ [1–(V_∞/V_tip)^2]^(1/2), where V_∞ is the free stream velocity and V_tip is the tip velocity of the propeller. For the given problem, the induced velocity can be calculated as: v_ind = (1/2) x 150 mph x [1–(150 mph/170 mph)^2]^(1/2) = 8.44 mph

c) The velocity in the downstream far field can be calculated using the equation V_∞ = V_tip – v_ind, where V_tip is the tip velocity of the propeller and v_ind is the induced velocity. For the given problem, the velocity in the downstream far field can be calculated as: V_∞ = 170 mph – 8.44 mph = 161.56 mph

d)The power absorbed by the fluid can be calculated using the equation P_fluid = (1/2) ρ V_ind^3 A_disc, where ρ is the air density, V_ind is the induced velocity, and A_disc is the area of the propeller disc. For the given problem, the power absorbed by the fluid can be calculated as P_fluid = (1/2) x 0.002377 x (8.44 mph)^3 x (π x (6 ft)^2) = 42.7 hp

e)The power absorbed by the propeller can be calculated using the equation P_prop = T x V, where T is the thrust of the propeller and V is the flight speed of the aircraft. For the given problem, the power absorbed by the propeller can be calculated as: P_prop = 23,834 lbf x 150 mph = 3,575,500 ft-lbf/s = 4,844.08 hp

f)The efficiency of the propeller can be calculated using the equation η = P_prop/P_fluid, where P_prop is the power absorbed by the propeller and P_fluid is the power absorbed by the fluid. For the given problem, the efficiency of the propeller can be calculated as: η = 4,844.08 hp/42.7 hp = 113.6%

To know  more  about induced velocity refer to the link brainly.com/question/15280442

#SPJ4

8 0
1 year ago
2. What is the slope of a line that is parallel to the line shown?
alexandr1967 [171]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
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Which equation illustrates the Multiplicative Inverse Property? A. 0 • 16 = 0 B. 1(48) = 48 C. 3 • (1/3) = 1 D. 9(1 + 0) = 9(1)
Talja [164]

Answer:

it's letter DDDDDDDDD

4 0
3 years ago
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