It is desired to connect two intersecting roadways, the centerlines of which have bearings N 40°30'E and S 32°40'E with a compound curve where the PT of the second curve ends 100 m from the intersection and located at the centerline of the second road. The radius R, of the second curve is two-thirds the radius of the first curve. The angle of intersection of the first curve is 69°40'. Station V = 2+125.623 m. a. Determine the radius of the first curve. b. Determine the radius of the second curve. c. If the compound curve is to be replaced by a simple curve whose length equals the length of the compound curve, find the stationing of PC. (Round off your final answers to three decimal places)

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Biological Processes

Biological solid waste includes bacterial and contaminated waste produced by living individuals. Its treatment is essential to prevent the spread of any air-borne or water-borne diseases or diseases transmitted from one organism to another in a food chain. There are many benefits of the biological solid waste treatment and some of them are: the minimized quantity of waste substance, waste control, eradicating any disease-causing pathogens, generation of biogas, composting, anaerobic digestion, bio drying, mechanical biological treatment, microbial fuel cell, phytoremediation, and biofiltration. The final products of the biological solid waste treatment may be recycled to obtain organic fertilizers or disposed of in SWDS (Solid Waste Disposal Site) after proper treatment.