the perimeter of a rectangle is 60 cm if its area 200 cm2 find its length and breadrh in cm​

2 thoughts on “the perimeter of a rectangle is 60 cm if its area 200 cm2 find its length and breadrh in cm​”

1. Answer:

   20 cm and 10 cm

   Step-by-step explanation:

   Let the length be a.

   Breadth = b

   Perimeter of the rectangle = 60 cm

   We know that,

   Perimeter of rectangle = 2( l+b)

   => 60 = 2(a+b)

   => a+b = 60÷2

   b = 30 – a

   Area of the rectangle = 200 cm²

   A/Q,

   Area of rectangle = l×b

   => 200 = a × (30 – a)

   => 200 = – a² + 30 a

   => a² – 30a +200 =0

   => a² – 20a – 10a + 200 =0

   => a(a-20) – 10(a-20) =0

   => (a-20)(a-10) =0

   a = 20 cm

   b = 30-a = 30 – 20 = 10 cm

   Therefore, length = a = 20 cm

   Breadth = b = 10 cm ANS.

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2. Answer:

   Save India!

   Step-by-step explanation:

   4) Find the amount if ₹ 2,000 is invested for 2

   years at 4% p.a. compounded annually.

   5) Find the area of the rectangle whose length

   and breadths are 3x 2 y m and 5xy 2 m

   respectively.

   6) Find the

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