The area of a rectangle is $36.75 c m 2$ . If its length is $10.5 c m,$ then its perimeter will be $_c m .$

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Solution

Step 1:Calculate the breadth from area of rectangle formula
Area of Rectangle $= L e n g t h x B r e a d t h$
$36.75 = 10.5 x B r e a d t h$
$B r e a d t h =$ $\frac{36.75}{10.5}$
$= 3.5 c m$
Step 2:Calculate the perimeter of the rectangle from perimeter formula.
Perimeter $= 2 x (L e n g t h + B r e a d t h)$
$= 2 x (10.5 + 3.5) = 28 c m$

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