Find the area of quadrilateral ABCD in which Angle BCA = 90°, AB = 13 cm and ACD is
an equilateral triangle of side 12 cm.
give the answer in paper
with full process and explanation
best answer will get brainlist answer and irrelevant answer or any comments will be reported and only answer will also be reported .
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In △ABC :-
Since,
It is a Right Angled △.
Let, BC and BE = x
By Pythagoras Theorem
(13)² = (x)² + (12)² + (x)²
(13)² = 25
x = 5,
BC = 5.
Area of Triangle ABC = 1/2×12×5 = 30
In △ACD :-
Since,
It is an Equilateral △
Area = √3/4(Side) = 36√3
Area of Quadrilateral = 36√3+30
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