Q8 of 28 Page 122

Draw parallelogram ABCD with the following measurements and calculate its area.

AB = 5.5 cm, DAB = 50° and BD = 7 cm.

Given. ABCD is a parallelogram.

AB = CD ; BC = AD , AB = 5.5 cm, BD = 7 cm


DAB = 50°


Formula used. Area of parallelogram = base × height


Steps of Construction


Step 1 : Draw AB of length 5.5cm


Step 2 : Make an angle of 50° on point A and extend the ray AD’



Step 3 : Make an arc of 7cm from point B on ray AD’ and also note Down the length of AD



Step 4 : Make an arc of 5.5cm from point D and another arc of same length of AD from point B



Step 5 : Mark the intersection point as C and join AC and CD



Step 6 : Draw a perpendicular on AB from point C and name the


intersection point as E



Area of parallelogram = base × height


= AB × CE


= 5.5cm × 7cm


= 38.5cm2


Conclusion. Hence; parallelogram ABCD is constructed and its area is 38.5cm2


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