Question

find the perimeter of recetangle whose length 7cm breadth 4 cm.​

Answer 1

Answer:

The formula for finding the perimeter of a rectangle is:

P=2×(l+b)

Thus putting the values from the question above,

140=2×(l+28)

140=2×l+2×28

140=2l+56

2l=140−56

l=842

l=42

This is the required length of rectangle.

Answer 2

Answer:

$\fbox\green{Question}$

$\leadsto$Find the perimeter of recetangle whose length 7cm breadth 4 cm.

$\fbox\green{Given}$

$\leadsto$ Length of rectangle = 7 cm

$\leadsto$ Breadth of rectangle = 4 cm

$\fbox\green{To\:find}$

$\leadsto$ We have to find the perimeter of the rectangle with given length and breadth.

$\fbox\green{Formula}$

• To find perimeter of rectangle

$\leadsto$ 2( l + b )

$\fbox\green{Solution}$

$\leadsto$ 2 ( 7 + 4 )

$\leadsto$ 14 + 8

$\leadsto$ 22 cm²

•°• The perimeter of rectangle is 22 cm²

$\fbox\green{Diagram:-}$

$\begin{gathered}\begin{gathered} \blue{\tt7 \: cm} \: \: \: \: \: \: \: \: \: \: \: \\ \pink{\boxed{\begin{array}{}\bf { \red{}}\\{\qquad \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:}{}\\ { \sf{ }}\\ { \sf{ }} \\ \\ { \sf{ }}\end{array}}} \blue{ \tt \:4 \: cm} \end{gathered}\end{gathered}$