Answer:To convert centimeters (cm) to inches (in), you need to know that 1 inch is approximately equal to 2.54 centimeters. - 6.4 cm to inches: 6.4 cm / 2.54 cm/in ≈ 2.52 inches- 6.4 x 1000 cm to inches: This is 6400 cm. 6400 cm / 2.54 cm/in ≈ 2519.7 inches Therefore: 6.4 cm ≈ 2.52 in 6.4 x 1000 cm ≈ 2519.7 in