The perimeter of a rectangle is 28 cm If one of its sides is 4 cm find the other side ........

Quantitative Aptitude (RRB NTPC) Mensuration 2D

The perimeter of a rectangle is 28 cm. If one of its sides is 4 cm, find the other side.

Perimeter of rectangle = 2×(l+b)= 28cm……………(Given)
One side is given let it be length(l)= 4cm
Now equation become
2×(4+b)= 28
b=10

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