Anonymous
Anonymous asked in Education & ReferenceHomework Help · 8 months ago

# Homework help- Math?

Anthrax spores, which were inhaled by postal workers, causing severe illness and death, are no larger than 5 microns in diameter. If a standard postal envelope is 3.5 inches by 5 inches, how many spores could be on a standard envelope? (Note: a micron is the same as a micrometer)

I don t even know where to begin

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• david
Lv 7
8 months ago

convert inches to cm - m - micrometers

3.5in X 2.54cm/in X 1m/100cm X 10^6 micrometers/m = 88900microns

each spore has diameter 5 microns ... 88900/5 = 17780 spores along the width of the envelope

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similarly the length of 5 in becomes 25400 spores

total on one side of the envelope = 25400 X 177800 = ??

total on BOTH sides = 2 X 25400 X 177800

= 903,224,000 spores.

• 8 months ago

Hmmmmmmmmmmmmmmm

• 8 months ago

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