Geometry and Trigonometry practice question

Answer: A. 36

The area of a parallelogram is base × height: 9 × 4 = 36 square centimetres.

Why the other answers are wrong

B. 18

18 is half of base × height, which is the area of a TRIANGLE. A parallelogram uses the full product.

C. 13

13 is 9 + 4. Area is a product, not a sum.

D. 26

26 is 2(9 + 4), a perimeter-style calculation — and only correct for a perimeter if the slanted side were 4, which the height isn't.

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