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7-80.

THE WEDDING CAKE, Part Two

Kiki is still trying to decide on her wedding cake. She has decided to keep the same shape and size but instead have 8 layers. Therefore, the diameters of the layers will be $16, 14, 12, 10, 8, 6, 4$, and $2$ inches. Each layer for this cake will be $2$ inches tall. Homework Help ✎

1. Set up a Riemann sum to evaluate the volume of the cake.

A Riemann sum does NOT have to be written in sigma notation.
Your setup should be concise and preferably written as a single equation.

2. Calculate the volume of this latest design.

$V = 2π(8^2 + 7^2 + ... ) \text{ in}^3$