Question

the length of rectangular plot is 1.5 times its breadth 20% of its perimeter is 20 m the area of the plot


plese answer fast today is my exam




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Answer 1

Answer:

area = 600 m²

Step-by-step explanation:

20% of perimeter = 20 m

=> 0.2 × perimeter = 20 m

=> perimeter = 20 m / 0.2 = 100 m

=> 2 × ( length + breadth ) = 100 m

=> length + breadth = 50 m

=> 1.5×breadth + breadth = 50 m    [ we're given that length = 1.5×breadth ]

=> 2.5 × breadth = 50 m

=> breadth = 50 m / 2.5 = 20 m

So length = 1.5 × breadth = 1.5 × 20 m = 30 m.

Therefore

area = length × breadth = 20 × 30 m² = 600 m²