A right triangle has legs of 3 cm and 4 cm. How long is the hypotenuse?
Answer and explanation
Correct answer: A. 5 cm
- Step 1: By Pythagoras, , so cm. Answer: 5 cm. Why not the others: 7 cm: adds the legs. 25 cm: forgets the square root. 1 cm: subtracts the legs.
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