A meter is equal to 100 centimeters. 1 meter = 100 centimeters. The length of this guitar is about 1 meter. Meters can be used to measure the length of a house, or the size of a playground.
Marcel Grateau invented the first Hair Straightener to straighten hair in 1872.
Maybe you don't know Garrett Morgan's name, but he dreamed up inventions that were the precursors to hair straighteners, gas masks, and traffic lights.