Hello!
Given,
Perimeter of rectangle = 32 cm
Width = 7cm
Perimeter of a rectangle = 2 (l+b)
32cm = 2l + 2 (7cm)
32 cm = 2l + 14cm
32cm -14cm =2l
2l= 18cm
l = 9cm
Area of a rectangle = length × breadth
= 7cm × 9cm
= 63 cm^2
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