. The diagonal of a quadrilateral shaped field is 15 metre and the perpendiculars to it from the
remaining opposite vertices are 10 metre and 12 metre. Find the area of the field
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Answers
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Given :
Diagonal of quadrilateral = 24 m and perpendicular dropped on it (diagonal) from the remaining opposite vertices are 8 m and 13 m.
(As shown in figure)
Find :
Area of the Quadrilateral.
Solution :
We know that
Area of quadrilateral = 1/2 × diagonal × (Sum of perpendicular on the quadrilateral from remaining opposite vertices)
Assume a quadrilateral ABCD such that
BD = diagonal of quadrilateral
AM and CN = perpendiculars on the diagonal
We have
Diagonal = BD = 24 m
Perpendicular on the quadrilateral (AM and AN) = 8 m and 13 m
Substitute the known values in above formula. To find the value of area of field (quadrilateral).
→ 1/2 × 24 × (8 + 13)
→ 12 × 21
→ 252 m²
∴ Area of quadrilateral is 252 m².
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