If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?

Name: If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?
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The Answer of If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?

If an Object Is Measured as 4 In