Question

mauli = l = ? b = 9cm perimeter = ? area = 81 cm​

Answer 1

Answer:

Area = 81 cm²

Breadth = 9 cm

Length = $\frac{Area}{Breadth}$ = ( 81/9 ) cm = 9 cm

Perimeter of the square = 4 x side = ( 4 x 9 ) cm = 36 cm

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Answer 2

$\star \; {\underline{\boxed{\pmb{\red{\sf{ \; Given \; :- }}}}}}$

• Breadth of Rectangle = 9 cm
• Area of Rectangle= 81 cm²

$\star \; {\underline{\boxed{\pmb{\blue{\sf{ \; To \; Find \; :- }}}}}}$

• Length of Rectangle = ?
• Perimeter of Rectangle = ?

$\star \; {\underline{\boxed{\pmb{\orange{\sf{ \; SolutioN \; :- }}}}}}$

$\dag$ Formula Used :

• ${\underline{\boxed{\pmb{\sf{ Perimeter = 2 \bigg( Length + Breadth \bigg) }}}}}$

• ${\underline{\boxed{\pmb{\sf{ Area = Length \times Breadth }}}}}$

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$\dag$ Calculating the Length :

${\longmapsto{\qquad{\sf{ Area = Length \times Breadth }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ 81 = Length \times 9 }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ \dfrac{81}{9} = Length }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ \cancel\dfrac{81}{9} = Length }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\pmb{\pink{\frak{ Length = 9 \; cm }}}}}}}}$

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$\dag$ Calculating the Perimeter :

${\dashrightarrow{\qquad{\sf{ Perimeter = 2 \bigg( Length + Breadth \bigg) }}}} \\ \\ \\ \ {\dashrightarrow{\qquad{\sf{ Perimeter = 2 \bigg( 9 + 9 \bigg) }}}} \\ \\ \\ \ {\dashrightarrow{\qquad{\sf{ Perimeter = 2 \times 18 }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\pmb{\purple{\frak{ Perimeter = 36 \; cm }}}}}}}}$

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$\dag$ Therefore :

❛❛ Length of the Rectangle is 9 cm and its Perimeter is 36 cm . ❜❜

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