The size of the seven inch photo is 17.8 & times; 12.7 cm, because its standard size is 7 & times; 5 inches, and one inch is about 2.54 cm. We can calculate this result. The commonly used photos in our life are one inch and two inches, and their sizes are 2.5 & times respectively; 3.5 cm, 3.5 & times; 4.9 cm. The size of seven inch photos we usually use photos of various sizes. The size of these photos is usually expressed in 'inch', such as one inch, two inches, five inches, seven inches, etc. how big are the seven inch photos?
The standard size of seven inch photos is 7 & times; 5 inches, and if one inch is converted into centimeters, it is about 2.54 cm. From this, we can conclude that the size of a seven inch photo is 17.8 & times; 12.7 cm, usually the size error of the photos we take is only about 1 ~ 2 mm.
Seven inch photos are not often used in our life. The more common size photos in our life are one inch and two inch, and their sizes are 2.5 & times respectively; 3.5 cm and 3.5 & times; 4.9 cm.