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3 years ago

V=1/3(pi)(r^2)(h) solve for h

Mathematics

2 answers:

Sladkaya [172]3 years ago

7 0

Answer:

h = 3V/(πr²)

Step-by-step explanation:

given the volume of a cone

V = (1/3)πr²h

πr²h = 3V

h = 3V/(πr²)

kompoz [17]3 years ago

5 0

Work is attached below.

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Alex787 [66]

Answer:

Step-by-step explanation:

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2 years ago

At 3pm, the length of the shadow of a thin vertical pole standing on level ground is the same as the height of the pole. A while

aliya0001 [1]

Answer: The height of the pole is 175.97 ( approx )

Step-by-step explanation:

Let the height of the pole is x cm,

Also, let the angle of elevation of the sun to the pole at 3 pm is $\theta$

Thus, by the question,

$tan\theta = \frac{\text{ The height of the pole}}{\text{ The height of the shadow}}$

$\implies tan\theta = \frac{x}{x}$ ( at 3pm the height of shadow = height of the pole)

$\implies tan\theta = 1$

$\implies \theta = 45^{\circ}$

Again, according to the question,

When the angle of elevation is $(\theta - 12^{\circ})$ ,

The height of shadow = x + 95,

$\implies tan(45-12)^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}=\frac{x}{x+95}$

$\implies tan 33^{\circ}x + 95\times tan33^{\circ}=x$

$\implies tan 33^{\circ}x - x = - 95\times tan33^{\circ}$

$\implies -0.3505924068 x = - 61.6937213538$

$x=175.969930202\approx 175.97\text{ cm}$

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3 years ago

SOMEONE HELP ME PLZ ASAP!!!!

Elanso [62]

A=22cm

B=21cm

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Good luck

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B. The median of the data set

**Update; A. The lower quartile**
See other answer for explanation.

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Answer:

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