RECORD: Darwin, C. R. [1880]. How many square feet (with a decimal) in 2ft 3 3/4 by 2ft 3 5/8 inch? [Earthworm research notes]. CUL-DAR64.2.23. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Prepared and edited by John van Wyhe 7.2025. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR64 contains research materials for Earthworms.
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How many square feet (with a decimal) in 2ft 3 3/4 inches by inches
2 ft 3 3/4 in ? = 2.3125 ft
2 ft 3 5/8 in = 2.30208 ft
2.3125 x 2.30208 = 5.323560 sq feet = 5.3236 nearly
What is weight of 8 oz avoirdupois minus 3 drach apothecary in oz & decimal —
i.e. what decimal of 1 oz in 3 drachs apoth.
= 7.9657 ounces avoirdupois
13.47 [x] 2 [=] 26.94 [-] 26 [=] 10.94
How much for square yard, ie 9 square feet
= 13.466 ounces
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 July, 2025