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
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
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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