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OpenStudy (anonymous):
how can i solve this?/ Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 12-inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 11 inches and the backboard has a shadow of 7 feet, then about how high is the top of the backboard?
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OpenStudy (pfenn1):
|dw:1337821710223:dw|The ratio of the shadows to the heights will give you the answer.
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