4. The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, fand
Also find the area
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Solution:
Perimeter= 100cm
Length= 35cm
Perimeter= 2(l+b)
100= 2(35=b)
\frac{100}{2}=35+b
2
100
=35+b
50= 35+b
b=50 - 35= 15cm
Therefore, breadth= 15cm
Area= l\times b=35cm\ \times\ 15cml×b=35cm × 15cm
=525cm^2=525cm^2
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