Coal seams measures 3 ft thick by 12 ft across and 150 ft in length. if the average energy value per pound of this given coal field is 11,000 btus/pound and this coal weighs 12 lbs per cubic foot then what is the energy value

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Answerboth technicians (a) and (b);

Iassume the answer is 75 feet. inwards to outwards rather than outwards to inwards. probably be 75.hachures are stokes drawn in direction of the steepest slope. a series of short parallel lines drawn on a map to indicate topographic relief. it is actually called hachures on contour lines. the small marks in the center of the feature are called hachures.observe the picture attached