Question

the perimeter of o rectangle is 20 cm and width is 3/4cm.find it's l​

Answer 1

Answer:

length = 37

Step-by-step explanation:

Perimeter of the rectangle = 20cm

Formula for finding out the perimeter of a rectangle = 2( l + b )

Width = 3/4cm

So length = 2( l + b )

=> 2 ( l + 3/4 ) = 20

=> 2l + 3/2 = 20

=> 2l = 20 - 3/2

=> 2l = 40 - 3 / 2

=> 2l = 37 / 2

=> l = 37 / 2 x 2

=> l = 37