A wire 210 cm long was cut into 2 pieces and bent to form a rectangle and a square. The length of the rectangle is 48.5 cm and its breadth is 38.5 cm. Find the length of one side of the square. Ans: ___ cm

1. Calculate the perimeter of the rectangle

Perimeter of rectangle $= 2 \times (48.5 + 38.5) = 2 \times 87 = 174$ cm

2. Calculate the perimeter of the square

Perimeter of square $= 210 - 174 = 36$ cm

3. Calculate the length of one side of the square

Side of square $= 36 \div 4 = 9$ cm