Draw parallelogram ABCD with the following measurements and calculate its area.
AB = 5 cm, BC = 4 cm, AC = 7 cm.
Given. ABCD is a parallelogram.
AB = CD ; BC = AD
AB = 5 cm, BC = 4 cm, AC = 7 cm
Formula used. Area of parallelogram = base × height
Steps of construction
Step 1 : Draw a line AB of 5cm
Step 2 : Make an arc of 7cm from point A and 4cm from point B
Step 3 : Intersection of Both the arcs gives point C then join
AB and AC
Step 4 : Draw arc of 4cm and 5cm from point A and C respectively
Step 5 : Mark the intersection point as D and join DC and DA
Step 6 : Draw a perpendicular on AB from point D and name the
intersection point as E
Area of parallelogram = base × height
= AB × DE
= 5cm × 3.9cm
= 19.5cm2
Conclusion. Hence; parallelogram ABCD is constructed and its area
is 19.5cm2