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Find thebarea of quadrilateral ABCD . AB= 4, AD= 17cm, DC=8cm,BC=? |
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Answer» if we make its diagram we get a TRAPEZIUM and area of trapezium =1/2 (sum of two parallel side )×h Step-by-step explanation: 1st we find bc which is our HEIGHT by APPLYING pythagoras theorem h2= p2 + b2 (17)2=p2 +(8)2 289=p2+64 p2=225 p=15=bc now we have to apply formula of area of trapezium =1/2 (sum of two parallel side)×h 1/2 (4+8)×15 6×15 = 90 |
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