To find the value of x, we can rearrange the equation and solve for x. Let's start by isolating x²:
80 = 0.2 * (1/2) * x²
Multiplying both sides by 2 to eliminate the fraction:
160 = 0.2 * x²
Dividing both sides by 0.2:
x² = 160 / 0.2
x² = 800
Taking the square root of both sides:
x = √800
x ≈ 28.28
Therefore, the value of x is approximately 28.28.