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Oksanka [162]
3 years ago
8

100 points and brainliest

Mathematics
2 answers:
mina [271]3 years ago
7 0

Answer:

Step-by-step explanation:

1: SA = bh + (s1 + s2 + s3)H

2: A = lw

3: A = lw

ahrayia [7]3 years ago
5 0

Answer:

B

Step-by-step explanation:

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Which statement about the planes is true?
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The volume of a cone is 3πx3 cubic units and its height is x units. Which expression represents the radius of the cone’s base, i
dalvyx [7]

Answer:

<em>r=3x</em>

Step-by-step explanation:

<u>The Volume of a Cone</u>

The volume of a cone of radius r and height h is:

\displaystyle V=\frac{1}{3}\pi hr^2

We are given the volume of a cone is

V=3\pi x^3

Equating:

\displaystyle \frac{1}{3}\pi hr^2=3\pi x^3

Multiplying by 3:

\pi hr^2=9\pi x^3

Simplifying by pi:

hr^2=9 x^3

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xr^2=9 x^3

Dividing by x:

r^2=9 x^2

Taking square roots:

r=\sqrt{9 x^2}=3x

Thus: r=3x

5 0
3 years ago
Read 2 more answers
A pole, 90 cm long, is painted green, white, and black in the ration 3:4:2. What length of the pole is painted black?
ollegr [7]
3u + 4u + 2u = 9u
9u = 90
1u = 90/9 = 10

since black is 2u ( from the ratio given)
2u = 10 x 2 = 20

Answer : 20cm of the pole is painted black.

The bar diagram is in the picture :)

3 0
3 years ago
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rodikova [14]

Answer:  Yes. 5 kilograms is  a little more than enough.

Step-by-step explanation:

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We can round that to 2.2 for a question like this.

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8 0
2 years ago
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