At Three Peaks School, they’re planning to build a gigantic triangle.

The sides have just arrived, on the back of some truly ridiculous trucks, and with police escort.

The longest side is 42 metres long, with the other two sides measuring 25 and 16 metres respectively.

Can you work out the area of the triangle assembled from these pieces?

Scroll down for the answer!

## Brainteaser answer

The lengths of any two sides of a triangle must add up to more than the length of the third side. If you put the two shorter sides end to end, you get a length of 41 metres, shorter than the long side. So there’s no way to make a triangle at all – the short sides are just too short!

*For more brainteasers and puzzles for kids, subscribe to Double Helix magazine!*

## Leave a Reply