2 years ago

sketch and label all possible rectangles with a perimeter of 30 cm and sides whose lengths are whole numbers

2 answers:

6 0

For example, you can draw a rectangle that has two opposite sides of 8, and the other two sides of 7. So they'll add up to be 8+8+7+7, which equals 30 (because the perimeter is all the lengths of the sides added up).

Ivahew [28]2 years ago

3 0

Its asking you to draw rectangles with sides that equal 30 cm for example

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A cube has a volume of 512 mm^3. If all sides of the cube are divided by 4, what will the resulting volume be?

pshichka [43]

$\bf \textit{volume of a cube}\\\\
V=s^3\qquad \boxed{s=\frac{s}{4}}\implies V=\left( \cfrac{s}{4} \right)^3\implies V=\cfrac{s^3}{4^3}\implies V=s^3\cdot \cfrac{1}{4^3}
\\\\\\
V=s^3\cdot \cfrac{1}{64}\impliedby \frac{1}{64}\textit{ of the original volume, if the original was 512}
\\\\\\
512\cdot \cfrac{1}{64}\implies \cfrac{512}{64}$