A right triangle has legs of 5 cm and 12 cm. What is the length of its hypotenuse?
Answer and explanation
Correct answer: D. 13 cm
- Step 1: By Pythagoras, . Step 2. So cm. Answer: 13 cm. Why not the others: 17 cm adds the legs without squaring them, cm subtracts the squares as if 12 cm were the hypotenuse, and 30 is the area of the triangle in square centimetres, not a length.
Practise more Mathematics: Geometry and Measurement.
Free questions with an explanation for every one, and full timed FUVEST (University of São Paulo Entrance Exam) mock tests.
More Mathematics: Geometry and Measurement questions
- What is the sum of the interior angles of a convex polygon with 8 sides?
- How many diagonals does a convex polygon with 10 sides have?
- A right circular cone has base radius 3 cm and height 4 cm. What is its volume?
- A sphere has surface area cm. What is its volume?
- A trapezoid has parallel sides of 8 cm and 12 cm and a height of 5 cm. What is its area?
- A circle is inscribed in a square of side 10 cm. What is the area of the region inside the square but outside the circle?