If perimeter and length of a rectanguar field are 154m and 42m respectively, find its breadth

Assuming you mean width not breadth (What is that)

The width would be: 35m

Step-by-step explanation:

Now its pretty staight forward

We know that the length is 42m

And the permineter is 154m

We know that the perimeter is the 2 widths and 2 lengths all added up to each other (basically very side added up)

An eaution could be used like, 2w+2l=154

We know length is 42 so

2w+2*42=154

Now just solve for W

2*42=84

2w+84=154

154-84= 70

70=2w

70/2=35

w=35

First picture:

c = 90, alternate interior angles

5. c = 65, alternate interior angles

Second picture:

c = 100, alternate interior angles

7. x = 49, corresponding angles

y = 49, alternate interior angles