Perimetre of a right triangle from its legs
Find the hypotenuse with the Pythagorean theorem, then add the three sides.
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A right triangle has legs of 4 cm and 3 cm. What is its perimeter, in cm?
Answer: 12
A right triangle has legs of 10 km and 24 km. What is its perimeter, in km?
Answer: 60
A right triangle has legs of 12 m and 35 m. What is its perimeter, in m?
Answer: 84
Tip: Find the hypotenuse with the Pythagorean theorem, then add the three sides.
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- Next in this topic Area of a right triangle from the hypotenuse and a leg Grade 8
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