Question

the area of a rectangular piece of cardboard is 100s.qm and it's length is 20 m. find its width. also find the perimeter of the cardboard​

Answer 1

Answer:

Breadth = 50 m

Perimeter = 140 m

Step-by-step explanation:

Area = 100 m²

Length = 20 m

Breadth = b

Area of rectangle = l × b

100 = 20 × b

100 = 20b

20b = 100

b = 100

20

b = 50

Therefore, breadth = 50 m

Perimeter of rectangle = 2( l + b )

= 2( 20 + 50 )

= 40 + 100

= 140 m