Advertisements
Advertisements
Question
Find out the length of the boundary of these shapes. (Hint: You can use a thread)

Now count the squares to find out :
- How many squares are there in each shape?
- Which shape covers the least number of squares?
- Which shape covers the most number of squares?
Advertisements
Solution
- The number of complete square in figure - A = 1
The number of complete square in figure - B = 2
The number of complete square in figure - C = 3
The number of complete square in figure - D = 2 - Figure A covers the least number of square which is 1.
-
The figure C covers the most number of square which is 3.
APPEARS IN
RELATED QUESTIONS
Here are pictures of some more fields. Find out which one has the longest boundary?

Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
Chandu’s father is called the ‘young old man’ in his village. At 70 years of age, he is fully fit. Do you know his secret? He goes for a walk around the field every morning. Everyday he takes four rounds of Chandu’s field.
What is the total distance he covers?
4 × ______ = ______ m = ______ km
How much lace will be used in 3 such table cloths?
A square has a boundary of 12 cm.
- From the corner of this square, a small square of side 1 cm is cut off. Will the boundary of B be less or more? Find its length.
- If you cut a 1 cm square to get shape C, what will be the length of the boundary of C?
![]() |
![]() |
![]() |
![]() |
| Square | New shape |
A hockey held is 91 metres 40 cm long and 55 metres wide. How long is the boundary of the held?
Usha and Valsamma are running a race. Usha is running on the inner circle. Valsamma is running on the outer circle.
- Valsamma runs faster than Usha. But still she loses the race. Can you guess why?
- Have you seen any race where runners start from different places – like in this picture? Guess why?
How will Neetu find out if the two gardens are equally big?
- How many Math-Magic books can be covered with one sheet of newspaper?
- Try covering your Math-Magic book with half a sheet of newspaper.
- Can you cover your book with a smaller sheet?
- Find the smallest sheet which can cover your book. Check if your friend used a smaller sheet than you.
- Which is the biggest leaf in this picture?

- Collect some leaves from the
garden. Place each of them here on this squared sheet. Trace out their edges and check how many squares there are in each leaf. - Which is the biggest leaf?
- Which is the smallest leaf?
Look at the picture. Can you divide it into 4 equal pieces? Each piece should have the same number of squares.





