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What is the length of stack E C with bar on top in the rectangular prism? Round to the nearest tenth of a centimeter. A. 7.5 cm. B. 9.4 cm. C. 12.6 cm. D. 15.3 cm.

User Gertrude
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EG = sqrt(8^2 + 5^2) = sqrt(64 + 25) = sqrt(89)

EC = sqrt((sqrt(89))^2 + 12^2) = sqrt(89 + 144) = sqrt(233) = 15.3 cm.

User Skynyrd
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