Blades of a magnetic compass are forming a rhombus having all equal sides measuring 5cm each. A diagonal measuring 1 cm is given which is forming the triangular shapes of the blades of the magnetic compass and dividing the rhombus into 2 congruent triangles, say ABC and DBC having equal dmensions.
A= under root s(s-a)(s-b)(s-c), where
therefore the area of triangle ABC,say A1 having sides 5cm, 5cm, 1cm is given by
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