Experiment with several such shapes and cut outs. you might find it useful to draw these shapes on squared sheets and compute their areas and perimeters. You have seen that increase in perimeters does not mean that area will also increase
Hello,
You can find the above types of problems in ncert book on perimeter and area.You can try solving the problems to improve your understanding on this chapter.You can copy paste and visit this link of the ncert book to read the chapter.:-
https://ncert.nic.in/ncerts/l/gemh111.pdf
The page 2 of the above pdf has problems of the stated type.
All the best




