Question 1045022
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The sides of two squares are 2.4 and 1.8 meters long respectively. Find the side of a new square
equal to the sum of the two squares in area.
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It is {{{sqrt(2.4^2 + 1.8^2)}}} = 3 meters.


I can answer even without a calculator !


It is the third side of the (3:4:5) triangle  (1.8, 2.4, 3).
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