1. The problem is to calculate the product of the acceleration due to gravity and the square of a given length. 2. The formula used is multiplication of a constant and the square of a number: $$9.8 \times (1.336)^2$$ 3. First, square the length: $$1.336^2 = 1.785696$$ 4. Then multiply by the acceleration due to gravity: $$9.8 \times 1.785696 = 17.5098208$$ 5. Rounded to a reasonable number of decimal places, the result is approximately $$17.51$$. Therefore, the final answer is $$17.51$$.