Question

find the length of a rectangle whose perimeter is 840m and bredth is 120 m​

Answer 1

Answer:

perimeter of rectangle is 2 (l+b)

840=2(l+120)

840=2l+240

600/2=l

l=300m

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Answer 2

Answer:

bredth(b) =120m

parameter(p) = 840m

length= l

p = 2(l+b)

840 = 2(l+120)

l = 420-120

l= 300