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Atissue cross-section viewed on a microscope slide shows a cell of almost rectangular shape with dimensions 6.9 × 10-4 cm by 1.1 × 10-3 cm. calculate the cross-sectional area of the cell. express the area in powers of ten notation and use the appropriate number of significant digits for the number multiplying the power of 10.

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Atissue cross-section viewed on a microscope slide shows a cell of almost rectangular shape with dim...