4. Find the perimeter and area of a square of side.
(a) 9 mm
(b) 14 cm
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Answer:
(a) Perimeter of square = 4×side
= 4×9=36mm^2
Area of square = side× side
= 9×9=81mm^2
(b) Perimeter of square = 4×side
=4×14=56cm^2
Area of square = side × side
= 14×14=196cm^2
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