Given RA = 5.5 cm and AE = 7 cm
Steps :
(i) Drawn a line segment RA = 5.5 cm.
(ii) With R and A as centres, drawn arcs of radii 5.5 cm and 7 cm respectively and let them cut at E.
(iii) Joined RE and AE.
(iv) With E and A as centres, drawn arcs of radius 5.5 cm each and let them cut at C.
(v) Joined AC and EC.
(vi) RACE is the required rhombus.
Calculation of Area :
Area of the rhombus = 1/2 × d1 × d2 sq.units
= 1/2 × 7 × 8.5 cm2
= 29.75 cm2