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30 December, 15:10

A collar of Styrofoam is made to insulate a pipe. Find its volume. The large radius R is to the outer rim. The small radius r is to the edge of the insulation. Use pi almost equals 3.14.π ≈ 3.14. r = 55 in. R = 77 in. h = 1515 in.

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  1. 30 December, 15:26
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    V=hp (R^2-r^2)

    V=1515 (3.14) (77^2-55^2) in^3

    V≈13814618.4 in^3
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