Because 1 ft = 33.3cm,10cm = 1 10 ÷ 33.33 = 3.3ft, so the hip circumference is11.

Hip circumference is the horizontal circumference of the most protruding part of the hip backward. According to scientific research, women's height and hip circumference index are significantly higher than men's, which is because women have hip breadth, not hips. Women with the same height, larger and wider hips, thin hips and thick thighs, pear-shaped and hourglass-shaped women are healthier and live longer than those with rectangular, apple-shaped and inverted triangular bodies with thick hips and narrow thighs. Pear-shaped and hourglass-shaped women and their offspring have higher cognitive ability, and the fat stored in buttocks and thighs contains omega-3 polyunsaturated fatty acids (DHA).