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Triathlon and Fitness
Age 11 to 14
Challenge Level 
What do you need to know to work out each athlete's speed?
How can you work out the speed in kilometres per hour?
If his swimming speed is slower than 4.5km/h, would you expect him to burn more or less than 600 kcal per hour?
Once you know the rate at which he burns calories, how will you work out how many calories he burns in 19 minutes and 12 seconds?
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If the sides of the triangle in the diagram are 3, 4 and 5, what is the area of the shaded square?