cm³

$804.25$ cm³

$V=16\pi r^2$

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for instance $h=\frac{\left(1000\right)}{\left(\pi r^2\right)}$. You could have made r the subject as well.

Relation between two variables. GR: Y1=X^3

Relation between two variables. GR: Y1=400–5*X^2

Not a relation between two variables.

$y=-0.5x+2.5$

$y=\frac{2}{3}x+2$

$y=\pm 4\cdot \sqrt{\left(x\right)}$

$y=6/x^2$

$-2x^3-12x^2$

$-x^2-8x$

$t^2+15t-100$

$3x^3-2x^2+3x-2$

$a^2-9$

$36x^2-36x+9$

$3000$ units

$3400$ units

€ 200

$R=p\cdot q=p\cdot (4000-20p)=4000p-20p^2$

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$p=100$