STEPS:
1. Draw line segment AB =4.2cm
2. With B as the center and radius equal to 4.2cm, draw an arc.
3. Wth A as the center and radius equal to 6.5cm, draw another arc such that it intersects the previous arc at C.
4. Join points B,C, and A,C.
5. With A as the center and radius equal to 4.2cm, draw an arc.
6. With C as the center and the same radius, draw another arc such that it intersects the previous arc at D.
7. Join points D,A and points D,C.
ABCD is a requied rhombus.