Perimeter

Total length around an enclosed area

How we can determine the perimeter of swimming pools

Find the total length of all the sides of the swimming pool

How to measure the length of the curve

Using a thread

How to estimate the perimeter of a shape

Use a square grid paper or a graph paper

The accuracy of estimated perimeter

Comparing the estimated value with the measured value

The smaller the difference between the values of estimated perimeter and measured perimeter

The more precise the estimated value

Percentage error

The smaller the percentage error

The more precise the estimated value

Perimeter of a square with sides of 4 cm

16cm

Perimeter of an equilateral triangle with sides of 10cm

30cm