Question

find the length of 10 metre wide room whose perimeter is 44 metre

Answer 1

Perimeter of room = 2( l+ b)
44 = 2 ( l+ 10)
44/2= l+10
22= l+10
22-10=l
12=l
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Answer 2

2*(l+b)

10+x=22

x=22-10

x=12

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