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Perimeter of a Triangle

If the side o...

Question

If the side of a rectangle are $7 x^{2}$ and $3 x^{2}$ , then its area in square units is

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Solution

Sides of a rectangle are $7 x^{2}, 3 x^{2}$

$A r e a = l e n g t h \times b r e a d t h$

$= 7 x^{2} \times 3 x^{2}$

$= 21 x^{4}$ sq.unit.

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