Question

side of a square is (2x+3 cm) find the perimeter
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Answer 1

$\sf \: Answer$

Side of a square = (2x + 3)

Perimeter of square = side × side

Perimeter of square = (2x + 3)²

Using (A + B)² = A² + B² + 2AB

(2x + 3)² = (4x² + 9 + 12x)cm , required Perimeter