16Hit1600
Geometry and TrigonometryEasyArea of a triangle

Geometry and Trigonometry practice question

A triangle has a base of 10 and a height of 6. What is its area?

  1. A. 16
  2. B. 30Correct
  3. C. 60
  4. D. 120

Answer: B. 30

Area = ½ × base × height = ½ × 10 × 6 = 30. Choice C (60) forgets the ½ factor.

Why the other answers are wrong

A. 16
16 is 10 + 6; you added the base and height instead of multiplying them and halving.
C. 60
60 is 10 × 6, but you left off the ½ in Area = ½ × base × height.
D. 120
120 is 2 × 10 × 6 — you doubled the product instead of halving it. The formula is ½ × base × height.

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