Question

SO cm the the 10 sq. cm (b) 200 sq. Ch area of the rectangle with: gth = 12 cm, breadth = 8 cm (ii) Length = 8 cm, breadth = 6 cm (iv) Length = 8 cm, breadth = 66 e cm​

Answer 1

Step-by-step explanation:

Let the breadth of the given rectangle be x cm.

Then, length =(x+8) cm

Now area =240cm

2

⇒length×breadth=240⇒(x+8)x=240

⇒x

2

+8x−240=0⇒x

2

+20x−12x−240=0⇒(x+20)(x−12)=0

⇒x=12orx=−20

But x cannot be negative, So, x=12

Hence, length =x+8=12+8=20cm and breadth =12cm

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