Advertisements
Advertisements
Question
Take a 20 centimetre long thread. Make different shapes by joining the ends. Place on the squared sheet on the next page.
find Out :
- How many squares are there in each shape?
- Which is the biggest shape?
- Which is the smallest shape?
- How long is the boundary of each shape?
Advertisements
Solution
- In figure A there are 14 complete squares
In figure B there are 4 complete squares In figure C there are 15 complete squares In figure D there are 10 complete squares. - Figure ‘C’ is the biggest shape.
- Figure ‘B’ is the smallest shape.
-
Measure the boundary of each shape by placing thread along the boundary of each shape.
APPEARS IN
RELATED QUESTIONS
Ganpat thanked Rahmat and started fencing his own field. But he needed to get more wire.
How long is the boundary of Ganpat’s field?
How much more wire will Ganpat need for his field?
Here are pictures of some more fields. Find out which one has the longest boundary?
Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
Boundary = ______ metre
Ganpat’s wife works in a tailor’s shop. She has to fix lace around a table cloth.
She bought a 100 metre roll of lace.
Look at the picture of the table cloth and tell how much lace is used for one table cloth.
How much lace will be left in the roll?
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?
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.
- Guess how many squares of one centimeter can fill this blue rectangle.
Write your guess here. - Check your guess by filling it with small squares.
