Question

the length of a room is 4m more than its breadth. if its area is 140 m^2 find its perimeter.​

Answer 1

Answer:

Step-by-step explanation: ATQ,

l=b+4

Area of a Rectangle = L X B = 140 so substituting we get,

b+4 x b=140

b²=140-4

b²=136

b=√136=11.6m

so substituting b in L=B+4 we get L=11.6+4=15.6

so now we have L=15.6 and B=11.6

Perimeter of the rectangle = 2(L+B)=2(15.6+11.6)

=2x27.2=54.4m

If you found this helpful then pls mark me as a brainliest