3 years ago

What is the perimeter of quadrilateral dobc? 14 units 16 units 22 units 28 units?

Mathematics

2 answers:

Anna007 [38]3 years ago

6 0

I know its 28 units i had it on a test

Feliz [49]3 years ago

6 0

Answer:

Step-by-step explanation:

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Blababa [14]

Answer: V = $100\pi$ $in^{3}$ (third option)

Given Information:

V = $\frac{1}{3}\pi r^{2} h$ <-- volume formula.
r = 5
y = 13
h = ?

To find h...

h, r, and y make a right triangle.
h and r are the two legs, y is the hyptenuse.
$h^{2} + r^{2} = y^{2}$
$h^{2} + 5^{2} = 13^{2}$
$h^{2} + 25 = 169$
$h^{2} = 144$
h = 12

Use formula:

V = $\frac{1}{3}\pi r^{2} h$
V = $\frac{1}{3} \pi (5)^{2} (12)$
V = $\frac{1}{3} \pi (25)(12)$
V = $\frac{1}{3} \pi (300)$
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Answer:

Step-by-step explanation:

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A^2−8ab+16b^2=81, find a–4b

neonofarm [45]

Answer:

-9, 9

Step-by-step explanation:

a² − 8ab + 16b² = 81

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Answer:

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Step-by-step explanation:

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99-21=78

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