Question

The area of a quadrilateral is 144 cm and the lengths of the perpendicular drawn on one of its diagonal from the opposite veriticies are 8cm and 4 cm find the length of the diagonal​

Answer 1

Answer:

[Figure is in the attachment]

Solution:

Given :

Area of quadrilateral ABCD= 342 m²

BE= 12 m , DF= 12 m

Let ABCD be a quadrilateral & AC be one of its diagonal.

BE perpendicular AC & DF perpendicular AC

Area of quadrilateral ABCD= ar∆ABC + ar∆ADC

Area of quadrilateral ABCD= 1/2×AC×BE + 1/2×AC×DF

342= 1/2AC(BE+DF)

342 = 1/2×AC (12+12)

342×2= 24AC

AC= (342×2)/24

AC = 342/12= 28.5 m

Hence, the length of the diagonal is 28.5 m

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Hope this will help you..