Question

5. Is it possible to design a rectangular park of perimeter 80 m and area 400 m?? If so, find its length and breadth.​

Answer 1

Step-by-step explanation:

Answer

Let the length be l m and the breadth be b m.

Then the area would be lb=400

Perimeter would be 2(l+b)=80

lb=400

⇒2(l+b)=80

⇒l+b=40

∴b=40−l --(1)

Substituting (1) in Area, we get

⇒l(40−l)=400

⇒40l−l

2

=400

⇒l

2

−40l+400=0

⇒(l−20)(l−20)=0

∴l=20

has equal roots, so it is possible to design the rectangle of given parameters.

⇒b=40−20=20

We now know that the length of the park is 20 m and the breadth of the park is also 20 m.

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Answer 2

Answer:

aap kon ho????????

your name?