40×30

"40x30" typically refers to a measurement, most commonly in inches or centimeters, indicating the dimensions of a rectangular object. This notation specifies the width and height, or length and width, of an item. For example, a print or poster might be described as 40x30 inches. In the context of images or screens, it could represent the pixel resolution, though larger numbers are more common for higher resolutions. The specific unit of measurement is usually inferred from the context in which "40x30" is used. Without further context, it's a general descriptor of size for two-dimensional items. This sizing is frequently encountered in framing, art, and some manufacturing processes where standard dimensions are employed.