Answer:
Step-by-step explanation:
area of the rectangle = l×b = 40m
let the breadth be 10m
l = ?
l × 10 = 40
l = 40/10
l = 4m
so the length of the 4 sides = 10m, 10m, 4m, and 4m
since opposite sides of a rectangle are equal
hope this helps
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