# Drawer

The rectangular face of a drawer has a perimeter of 108 cm and a width of 18cm. Find the length and the area of the rectangular face of the drawer.

Correct result:

b =  36 cm
A =  648 cm2

#### Solution:

$p=108 \ \text{cm} \ \\ a=18 \ \text{cm} \ \\ p=2(a+b) \ \\ b=(p - 2 \cdot \ a)/2=(108 - 2 \cdot \ 18)/2=36 \ \text{cm}$
$A=a \cdot \ b=18 \cdot \ 36=648 \ \text{cm}^2$

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