Mathematics: What expression is equivalent to 10n-50 20

Let breadth be xLength=2xLength=6×2=12inBreadth=6in...

What expression is equivalent to 10n-50 20

dalechloe5596

03.02.2021

Let breadth be x

Length=2x

$\\ \sf\longmapsto Area=Length\times Breadth$

$\\ \sf\longmapsto 72=2x(x)$

$\\ \sf\longmapsto 2x^2=72$

$\\ \sf\longmapsto x^2=\dfrac{72}{2}$

$\\ \sf\longmapsto x^2=36$

$\\ \sf\longmapsto x=\sqrt{36}$

$\\ \sf\longmapsto x=6$

Length=6×2=12inBreadth=6in

$\\ \sf\longmapsto Perimeter=2(L+B)$

$\\ \sf\longmapsto Perimeter=2(12+6)$

$\\ \sf\longmapsto Perimeter=2(18)$

$\\ \sf\longmapsto Perimeter=36in$

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