The perimeter of a rectangle is 42 and its lenght is xcm. Find its breadth in terms x

Answer 1

Let the breadth of the rectangle be y cm.

We know that the perimeter of a rectangle is 2(length + breadth).

Therefore,

2(x + y) = 42

x + y = 21

We also know that length (x) and breadth (y) are related by:

area = length x breadth

Since we don't know the area of the rectangle, we cannot solve for y exactly. However, we can express y in terms of x as follows:

y = (21 - x)

So, the breadth of the rectangle in terms of x is (21 - x) cm.