Question 839637
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Hi,
<img src='http://img585.imageshack.us/img585/479/rectangle.png' border='0'/></a>
Note:  Area is in cm^2
The area of rectangle lies between 40cm^2 and 45cm^2. (If one of the sides is 5 cm)
Using the Pythagorean Theorem
A = 40cm^2 (8cmx5cm) &#8658;  diagonal = {{{sqrt(8^2 + 5^2) = sqrt(89) = 9.4}}}
A = 45cm^2 (9cmx5cm)  &#8658;  diagonal = {{{sqrt(9^2 + 5^2) = sqrt(106)= 10.3}}}
Wish You the Best in your Studies.