A road is in the shape of a regular hexagon (six-sided figure) with each side of length 6 km. Suppose a car starts at a corner and more along the road for a distance 20 km. Let the distance of the car from its starting point be x km, find the value of x²
(x)² = (12)²+(2)²-2·12·2·1/2
= 148-24
= 124