Question

when breadth is increased by 2cm and length is reduced by 3 cm of a rectangle with perimeter 60cm, the area of the newly formed rectangle became 210 sq.cm.a) if width of the first rectangle is x, what is its length?b)what is the length of the newly formed rectangle? c) forming a second degree equation , find the length and breadth of the first rectangle​

Answer 1

Step-by-step explanation:

a) Perimeter of first rectangle=60cm

Width=x

1. 2(Length + Breadth)=60
2. 2(Length + x)=60
3. Length= (60/2)-x
4. Length=30-x

b) length of the newly formed rectangle = 30-x-3

27-x

c) (x+2)(27-x)=210

x^2-25x+156=0

If x=13. Length=17

If x=12. Length=18