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Can you help me solve that question? Scale of 3 inches = 2 feet. If the photo is 7.5 inches long, how many feet long is the painting? What is 1102 mmÂ³ times 250 Billion? (SIMPLIFIED AND NOT SIMPLIFIED)? How do you find the gradient of the following scalar fields:- How do i show that rectangle FGHJ is a square? (It's on a grid)?