Final answer:
To calculate (400mm)(0.6MN)², convert 400mm to meters and 0.6MN to newtons. Then substitute the values into the expression and calculate the result.
Step-by-step explanation:
To calculate (400mm)(0.6MN)², we need to convert 400mm to meters and 0.6MN to newtons. We can use the conversion factor that 1m is equal to 1000mm and 1MN is equal to 1,000,000N. So, 400mm is equal to 0.4m, and 0.6MN is equal to 600,000N. Now, we can substitute these values into the expression: (0.4m)(600,000N)² = (0.4)(600,000)² = 144,000,000N².