A laboratory is 9 m long, 8 m broad and 6 m high. It has 2 doors each of size 3 m × 1.5 m and four windows each of size 1.5 m × 1 m. Find the cost of whitewashing the walls of the laboratory at the rate of 1.75 per sq. m.
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A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Unicellular organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but many are unicellular such as protozoa, unicellular algae, and unicellular fungi. Unicellular organisms are thought to be the oldest form of life, with early protocells possibly emerging 3.8–4.0 billion years ago.[1][2
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