Question

The length of a rectangular field
exceeds its breath by Bomand the
area of field is 240cm*2 on the breath
of the field is :
a)20 cm
b) 30 cm
c) 12 cm
d) 16 cm​

Answer 1

Answer:

12 cm

Step-by-step explanation:

let the breadth of the field be x

so length=8+x

area=240

length*breadth=240

(8+x)*x=240

8x+x^2=240

x^2+8x-240=0

x^2+20x-12x-240=0

x(x+20)-12(x+20)=0

(x+20)(x-12)=0

x=-20;x=12

breadth cannot be negative

therefore,breadth=12

and length =12+8=20