8-inch to 9-inch round pan: exact factor
Derive the exact 81/64 recipe multiplier and scale a 250-unit quantity without rounding the intermediate ratio.
Open exampleWorked pan ratios
Cake pan conversion examples
Follow one exact round-to-round ratio and one multi-pan round-to-rectangle ratio where pi remains.
Two 8-inch rounds to one 9×13 pan
Include pan count, keep pi visible, and derive the approximate factor 117/(32π) for equal average batter depth.
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