2016 · Q68
What is the area of a triangle with sides of length 12 cm, 13 cm and 5 cm ?
Elementary MathematicsMensuration
- A30 {cm}²
- B35 {cm}²
- C40 {cm}²
- D42 {cm}²
Explanation
Since 5²+12² = 25+144 = 169 = 13², this is a right triangle with legs 5 and 12. Its area is (1/2)×5×12 = 30 cm². Hence option A.