please answer class 7 mathematics
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Answer:
Step-by-step Explanation:
Length of the paper = 12 [tex]\frac{1}{2}[/tex] cm
= [tex]\frac{12 * 2 + 1}{2} = \frac{25}{2} cm[/tex]
Width of paper = 10 [tex]\frac{2}{3}[/tex] cm
= [tex]\frac{10*3+2}{3} = \frac{32}{3} cm[/tex]
Perimeter = 2 × (Length + Width)
= 2 × [tex](\frac{25}{2} + \frac{32}{3} )[/tex]
= 2 × [tex](\frac{75 + 64}{6})[/tex]
= 2 × [tex]\frac{139}{6}[/tex]
= [tex]\frac{139}{3}[/tex]
= 46 [tex]\frac{1}{3}[/tex] [tex]cm\\[/tex]
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