To calculate the length of fencing required to surround a rectangular piece of land, you need to find the perimeter of the rectangle.
The formula to calculate the perimeter of a rectangle is:
Perimeter = 2 × (Length + Width)
In this case, the length of the rectangular piece of land is 55 cm and the width is 35 cm. Substituting these values into the formula, we can calculate the perimeter:
Perimeter = 2 × (55 cm + 35 cm)
Perimeter = 2 × 90 cm
Perimeter = 180 cm
Therefore, the length of fencing required to surround the rectangular piece of land is 180 cm.