Question

find the length of the rectangle breadth and permiter of rectangle are 20 cm and 1 meter​

Answer 1

$\Large{\underline{\underline{\sf{Given:}}}}$

• Breadth of rectangle = 20 cm

• Perimeter of rectangle = 1 m= 100 cm

$\Large{\underline{\underline{\sf{Find:}}}}$

Lenght of rectangle

$\Large{\underline{\underline{\sf{Formula \: used:}}}}$

Perimeter of rectangle is = 2 ( lenght + breadth)

$\Large{\underline{\underline{\sf{solution:}}}}$

Perimeter of rectangle = 2 ( lenght + breadth)

100 cm = 2 ( l + 20 cm)

100 cm = 2l + 40 cm

100 cm - 40 cm = 2l

60 cm = 2l

60 cm / 2 = l

30 cm = lenght

Hence, the lenght of rectangle is 30 cm.

$\Large{\underline{\underline{\sf{Answer:}}}}$

lenght of rectangle is 30 cm

$\huge \sf { \fcolorbox{green}{g}{Hope It helps \: ࿐}}$

Answer 2

solution:

Perimeter of rectangle = 2 ( lenght + breadth)

100 cm = 2 ( l + 20 cm)

100 cm = 2l + 40 cm

100 cm - 40 cm = 2l

60 cm = 2l

60 cm / 2 = l

30 cm = lenght

Hence, the lenght of rectangle is 30 cm.

$\Large{\underline{\underline{\sf{Answer:}}}}$

lenght of rectangle is 30 cm

$\huge \sf { \fcolorbox{green}{g}{Hope It helps \: ࿐}}$