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vitfil [10]
3 years ago
11

the base of a prism has a square base with side length 8cm. The height of the prism is 20cm. Find the surface area and the volum

e
Mathematics
2 answers:
yanalaym [24]3 years ago
8 0
Area: 64
Volume 1,280
DaniilM [7]3 years ago
4 0

Answer:

Surface Area: 64

Volume: 426.7

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What is the radius of a circle whose equation is x2 y2 8x – 6y 21 = 0?
andrew11 [14]

we know that

the standard form of the equation of the circle is

(x-h)^{2} +(y-k)^{2}=r^{2}

where

(h,k) is the center of the circle

r is the radius of the circle

In this problem we have

x^{2} +y^{2} +8x-6y+21=0

<u>Convert to standard form</u>

Group terms that contain the same variable, and move the constant to the opposite side of the equation

(x^{2}+8x) +(y^{2}-6y)=-21

Complete the square twice. Remember to balance the equation by adding the same constants to each side.

(x^{2}+8x+16) +(y^{2}-6y+9)=-21+16+9

(x^{2}+8x+16) +(y^{2}-6y+9)=4

Rewrite as perfect squares

(x+4)^{2} +(y-3)^{2}=4

(x+4)^{2} +(y-3)^{2}=2^{2}

the center of the circle is (-4,3)

the radius of the circle is 2\ units

therefore

<u>the answer is</u>

the radius of the circle is 2\ units


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3 years ago
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J = 18 − 2j<br> is it a identity
mixas84 [53]
I don’t understand the question you’re asking? If you could give more context I would love to help!
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3 years ago
Marilyn and Vanessa earn service points for every hour they volunteer at the local library. Marilyn
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<em>Answer:</em>

<em>200 points Vanessa</em>

<em>Step-by-step explanation:</em>

<em>M = 165%V</em>

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<em>33000 = 165V</em>

<em>V = 33000 : 165</em>

<em>V = 200 points Vanessa</em>

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3 years ago
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VARVARA [1.3K]

Step-by-step explanation:

Breadth

=5/6

Length

=15/6

Area of rectangle = l x b

=5/6 x 15/6

=75/6

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2 years ago
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