Question

MATHS
FRACTION AND DECIMALS
NCERT
CBSE
Please do step wise step​

Answer 1

Answer:

$length \: of \: rectangular \: sheet , \: l \: = 13\frac{1}{4} = \frac{53}{4} cm \\ and \: \: breadth \: of \: rectangular \: sheet, \: b \: = 11 \frac{2}{5} = \frac{57}{5} cm \\ now, \\ perimeter \: of \: rectangle \: = 2(l + b) \\ = > perimeter \: of \: rectangular \: sheet \: = 2( \frac{53}{4} + \frac{57}{5} ) \\ = 2( \frac{53 \times 5 + 57 \times 4}{20} ) \\ = 2 \times \frac{265 + 228}{20} \\ = \frac{265 + 228}{10} = \frac{493}{10} {cm}^{2 } \: \: or \: 49 \frac{3}{10} {cm}^{2}$