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CBSE Class 10 Answered

The diagonal of a rectangular field is 60 m more than the shorter side. If the longer side is 30 m more than the shorter side, find the sides of the feild. 
Asked by 16052004shriya | 30 Apr, 2019, 10:31: PM
answered-by-expert Expert Answer
Breadth = x
Length = x + 30
diagonal = 60+x m
we know by pythagoras theorem
Diagonal2 = breadth2 + length2
602+120x+x2=x2+x2+60x+900
3600+120x+x2=2x2+60x+900
x2-60x-2700=0
x=90 or x=-30
length can't be negative
x=90
Answered by Arun | 01 May, 2019, 09:12: AM

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