A rhombus has diagonals perpendicular to each other.1. Draw AC=47cm
2. Draw perpendicular bisector XY of AC intersecting AC at O.
3. Taking O as centre and 12×54=27cm as radius
draw two arcs intersecting OX and OY at B and D respectively.
4. Join AB, BC, CD and AD.
ABCD is the required rhombus.