Mathematics
Answer
Steps of construction :
Draw a line segment AC = 7 cm.
With A as center and radius equal to 5.4 cm, we draw an arc extending on both sides of AC.
With C as center and radius equal to 5.4 cm, we draw an arc extending on both sides of AC to the cut first arc at B and D.
Join AB, BC, CD and DA.

Hence, ABCD is the required rhombus.