Question

what will be the answer​

Answer 1

Answer:

78 is the answer

Step-by-step explanation:

A(rectangle)=LXB

140=35XB

140/35=B

B=4

perimeter of a rectangle is

p=2(LXB)

p=78

Answer 2

$\star \; {\underline{\boxed{\pmb{\green{\frak{ \; Given \; :- }}}}}}$

• Area = 140 cm²
• Length = 35 cm

$\star \; {\underline{\boxed{\pmb{\orange{\frak{ \; To \; Find \; :- }}}}}}$

• Perimeter = ?

$\star \; {\underline{\boxed{\pmb{\purple{\frak{ \; SolutioN \; :- }}}}}}$

$\bigstar$ Formula Used :

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

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

$\\ \qquad{\rule{150pt}{2pt}}$

$\bigstar$ Calculating the Breadth :

${\longmapsto{\qquad{\sf{ Area = Length \times Breadth }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ 140 = 35 \times Breadth }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ \dfrac{140}{35} = Breadth }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ \cancel\dfrac{140}{35} = Breadth }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\pmb{\red{\sf{ Breadth = 4 \; cm }}}}}}}}$

$\\ \qquad{\rule{150pt}{2pt}}$

$\bigstar$ Calculating the Area :

${\dashrightarrow{\qquad{\sf{ Perimeter = 2 \bigg( Length + Breadth \bigg) }}}} \\ \\ \\ \ {\dashrightarrow{\qquad{\sf{ Perimeter = 2 \bigg( 35 + 4 \bigg) }}}} \\ \\ \\ \ {\dashrightarrow{\qquad{\sf{ Perimeter = 2 \times 39 }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\pmb{\blue{\sf{ Perimeter = 78 \; cm }}}}}}}}$

$\\ \qquad{\rule{150pt}{2pt}}$

$\bigstar$ Therefore :

❛❛ Perimeter of the given Rectangle is 78 cm . ❜❜

$\\ {\underline{\rule{300pt}{9pt}}}$