Question

The length of rectangle is 20' less than half of its perimeter then breadth is .​

Answer 1

Answer:

The breadth of rectangle is 20 units

Step-by-step explanation:

Given that length of rectangle is 20 less than half of its perimeter

Let length of rectangle be l

Let breadth of rectangle be b

Let perimeter of rectangle be P

We have

$l = \frac{P}{2} - 20\\\\2l = P - 40$

Also, we know perimeter of rectangle is calculated as

$Perimter = 2l + 2b\\\\ P = 2l + 2b\\\\ P = P - 40 + 2b\\\\2b = 40\\\\b = 20$

Thus, breadth of rectangle is 20 units

Answer 2

Answer:

let ,

breadth = x

length = 20-1/2 of its perimeter

perimeter = length ×breadth

1/2( l + b ) =39/2 (l +b) × x

x = 1 /39

idk if its correct or not ..but the process would be similar