a playground has sides 17 m, 19 m and 18m. is 60 m of fencing enough to fence the 3 sides?

Add the sides. Is it less than 60 m?

Yes

To determine if 60 m of fencing is enough to fence the 3 sides of the playground, you need to find the perimeter of the playground.

The perimeter of any polygon is calculated by adding the lengths of all its sides.

So, for the given playground, the perimeter would be:
17 m + 19 m + 18 m = 54 m

Since the perimeter of the playground is 54 m and you have 60 m of fencing, it is enough to fence the 3 sides of the playground.

To figure out if 60 m of fencing is enough to fence the three sides of the playground, we simply need to calculate the perimeter of the playground and compare it to the length of the fencing available. The perimeter is calculated by adding up the lengths of all the sides.

In this case, the sides of the playground are 17 m, 19 m, and 18 m. To calculate the perimeter, we add these three sides together:

Perimeter = 17 m + 19 m + 18 m = 54 m

The perimeter of the playground is 54 m. Since 60 m of fencing is greater than the perimeter, we can conclude that 60 m of fencing is enough to fence the three sides of the playground.