A triangle has sides , and . What is its area?

Answer and explanation

Correct answer: D.

  1. Step 1: The semi-perimeter is . Step 2. Area . **Answer: . Why not the others:** Half the product of two sides is only valid if those sides meet at a right angle.

Practise more Arithmetic, Algebra, Geometry and Trigonometry.

Free questions with an explanation for every one, and full timed UNI Admission Exam (Peru) mock tests.