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      Question

      In a parallelogram, adjacent sides are 10 cm and 8 cm,

      and the included angle between them is 60°. Find the area of the parallelogram.
      A 10√3 cm² Correct Answer Incorrect Answer
      B 40√3 cm² Correct Answer Incorrect Answer
      C 20√2 cm² Correct Answer Incorrect Answer
      D 30√2 cm² Correct Answer Incorrect Answer

      Solution

      Area = ab sinθ Here a = 10, b = 8, θ = 60° sin60° = √3/2 Area = 10 × 8 × √3/2 = 80 × √3/2 = 40√3 cm².

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