Question

To solve the sum-write in the box. I am rectangle My breadth is x cm. My perimeter is 40 cm. My length is 3 times of my breadth Solution-Perimeter of rectangle is 40 cm. :: 2(x+ x) = 40 x= . 2x0x = 40, 8 x = 40, :. X= = , .. length of rectangle is and bread is 2([ - cm.


lifetania meri following mein hai Sucheta

kunal school student​

Answer 1

Answer:

Perimeter of rectangle =40 cm (given)

condition :- length = 2× breadth +2

⇒l=2b+2

perimeter p=2(l+b)=40

⇒2(2b+2+b)=40

⇒2(3b+2)=40

⇒6b=40−4=36

∴b=6cm

l=2×6+2=12+2=14cm

∴ length =14 cm, breadth =6 cm