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iogann1982 [59]
3 years ago
7

Place value chart. explain and show what it is

Mathematics
1 answer:
tigry1 [53]3 years ago
8 0
Place Value Chart for Whole Numbers

Each digit in a whole number has a place value, based on its position from the right, as seen in the following place value chart. Scroll down the page for more examples and solutions.

The value of a digit in the number is the digit multiplied by the place value.

<span>The following table shows examples to distinguish between the place value of a digit and the value of a digit.</span>

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Answer:

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Step-by-step explanation:

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3 years ago
Work out the surface area of a cylinder when the height = 18cm and the volume = 1715cm cubed
lara [203]

Answer:

813.4 cm² (nearest tenth)

Step-by-step explanation:

<u>Volume of a cylinder</u>

\sf V=\pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • h = 18cm
  • V = 1715 cm³

Use the Volume of a Cylinder formula and the given values to find the <u>radius of the cylinder</u>:

\implies \sf 1715=\pi r^2 (18)

\implies \sf r^2=\dfrac{1715}{18 \pi}

\implies \sf r=\sqrt{\dfrac{1715}{18 \pi}

<u>Surface Area of a Cylinder</u>

\sf SA=2 \pi r^2 + 2 \pi r h \quad\textsf{(where r is the radius and h is the height)}

Substitute the given value of h and the found value of r into the formula and solve for SA:

\implies \sf SA=2 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)^2 + 2 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)(18)

\implies \sf SA=2 \pi \left(\dfrac{1715}{18 \pi} \right) + 36 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)

\implies \sf SA=\dfrac{1715}{9} + 36 \pi \left(\sqrt{\dfrac{1715}{18 \pi}\right)

\implies \sf SA=813.3908956...

Therefore, the surface area of the cylinder is 813.4 cm² (nearest tenth)

8 0
2 years ago
Read 2 more answers
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nlexa [21]

Answer:

-17  or (-12) - 5

Step-by-step explanation:

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3 years ago
Greg and Elizabeth are having a debate. Greg contends that the square base of the Great Pyramid of Giza is at least 4 44 times a
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Answer:

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I need help right away!!!
Reptile [31]
Y=6 when x=18, find y when x=-12

so 6/18 = y/-12
cross multiplication
(6)(-12) = (18)(y)
-72 = 18y
divide both sides by 18
-4 = y

Hope this helps
XD

4 0
3 years ago
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