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3 years ago

What is the EXACT and APPROXIMATE volume of the cylinder? (I NEED HELP FAST!)

Mathematics

2 answers:

brilliants [131]3 years ago

8 0

Exact is 320 pi

Approx is 1004.8

Leto [7]3 years ago

4 0

Exact: in terms of pi
v=hpir^2
h=height
r=radius

given
h=5
r=8
v=5pi8^2
v=5pi64
v=320pi cubic inches is the exact

aprox
pi=3.14 for aprox
v=1004.8 cubic inches

exact volume is 320pi in³
aprox volume is 1004.8 in³

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The question is attached

Bingel [31]

Answer:

We call the denominator rational.

Step-by-step explanation:

For example:

$\frac{1}{\sqrt{2}} = \frac{\sqrt2}{\sqrt2 \cdot \sqrt2} = \frac{\sqrt2}{2}$

It's clear that the denominator is now a rational number, not an irrational one anymore.

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1 year ago

If cosθ=2/3 find cscθ using identities. This is in quad. 1.

laiz [17]

Step-by-step explanation:

cos θ = 2/3

$\quad \twoheadrightarrow\sf {cos \; \theta = \dfrac{Base}{Hypotenuse} } \\$

Hence, base = 2 units and hypotenuse = 3 units.

$\quad \twoheadrightarrow\sf { H^2 = B^2 + P^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = H^2 - B^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = (3)^2 - (2)^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = 9- 4} \\$

$\quad \twoheadrightarrow\bf { P = \sqrt{5}} \\$

Now, we know that :

$\quad \twoheadrightarrow\sf {cosec \; \theta = \dfrac{Hypotenuse}{Perpendicular} } \\$

$\quad \twoheadrightarrow\bf{cosec \; \theta = \dfrac{3}{\sqrt{5}} } \\$

Therefore, the required answer is 3/√5.

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2 years ago

Can anybody write an equation for the following word story:

Rudiy27

40=6.95c+5.25
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The CDs are 6.95 each, so they get a variable to show that.
The 5.95 is added to that, showing that it's only charged once.
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