A 12×18 cm photo card is inserted into a frame of constant width. Determine the width of the frame if the area of the frame
| December 15, 2020 | education
A 12×18 cm photo card is inserted into a frame of constant width. Determine the width of the frame if the area of the frame is equal to the area of the photo itself.
To find the area of the photo (that is, the frame itself), you need to multiply the size, namely the length and width:
12 * 18 = 216 square centimeters.
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