Given diagonal = 7.5 cm
Steps :
(i) Drawn a line segment BS = 7.5 cm.
(ii) Drawn the perpendicular bisector XY to BS. Let it bisect BS at O.
(iii) With O as centre, drawn an arc of radius 3.7 cm on either side of O which cut OX at T and OY at E
(iv) Joined BE, ES, ST and BT.
(v) BEST is the required square.
Calculation of Area :
Area of the square BEST = a2 sq.units
= 5.3 × 5.3 cm2
= 28.09 cm2