Answer:
Perimeter of the rectangular sheet \[=2\times (l+b)\] \[\Rightarrow \] \[100=2\times (35+b)\] \[\Rightarrow \] \[35+b=\frac{100}{2}\] \[\Rightarrow \] \[35+b=50\] \[\Rightarrow \] \[b=50-35=1\text{5 cm}\] Hence, the breadth of the rectangular sheet is 15 cm \[\therefore \] Area of the rectangular sheet \[=l\times b\] \[=35\times 15=52\text{5 c}{{\text{m}}^{\text{2}}}\]
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