You want to build a plant stand with three equally spaced circular shelves. You want the top shelf to have a diameter of 6 inches and the bottom shelf to have a diameter of 15 inches. What is the diameter of the middle shelf?

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You want to build a plant stand with three equally spaced circular shelves. You want the top shelf to have a diameter of 6 inches and the bottom shelf to have a diameter of 15 inches. What is the diameter of the middle shelf?

 

\large \mathbb{SOLUTION}

\bold{Top \: diameter \: = \: 6 \: inches}

\bold{Bottom \: diameter \: = \: 15 \: inches}

nderline \bold{Diameter \: of \: middle \: shelf:}

  • \large {\frac{6 \: + \: 15}{2} \: = \: \frac{21}{2}}
  • \large \bold{10.5 \: inches}

Therefore, the answer in 10.5 inches.

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