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3 years ago

Which missing side length makes the perimeter , p = 26 feet true?

Mathematics

2 answers:

Vadim26 [7]3 years ago

6 0

P of a rectangle = 2(l+w)
l=3
p=26

26 = 2(3+w)
26 = 6 + 2w
20 = 2w

w=10

Anastaziya [24]3 years ago

4 0

If the width is 3 on each side, that is 3 + 3 = 6.
26 - 6 = 20.
There are two sides left: 20 divided by 2 = 10.
10+10+3+3 = 26.
The length is 10.

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The radius of a sphere is 2 millimeters

The surface area of a sphere is 50.24 square millimeters.

The circumference of the great circle of a sphere is 12.56 millimeters.

Step-by-step explanation:

<u><em>Verify each statement</em></u>

case A) The radius of a sphere is 8 millimeters

The statement is false

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The volume of the sphere is equal to

$V=\frac{4}{3}\pi r^{3}$

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$V=100.48/3\ mm^{3}$

$\pi =3.14$

substitute and solve for r

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case B) The radius of a sphere is 2 millimeters

The statement is True

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case C) The circumference of the great circle of a sphere is 9.42 square millimeters

The statement is false

The units of the circumference is millimeters not square millimeters

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$C=2\pi r$

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$C=2(3.14)(2)$

$C=12.56\ mm$

case D) The surface area of a sphere is 50.24 square millimeters.

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The surface area of the sphere is equal to

$SA=4\pi r^{2}$

we have

$r=2\ mm$

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