Question

length of rectangle is greater than its breadth by 18cm. if both lenght and breadth are increased by 6cm, then area increased by 168cm2. find length and breadth.​

Answer 1

Answer:

Breadth = 2cm

length = 20cm

Step-by-step explanation:

breadth = a

length = a + 18

area = a(a+18) = a² + 18a

if length = a + 18 + 6 = a + 24

and breadth = a + 6

area will be =

(a+24) (a+6)  = a² + 18a + 168

a² + 6a + 24a + 144 = a² + 18a + 168

12a = 24

a = 2

Breadth = 2cm

length = 20cm

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