An igloo or Eskimo hut is built in the form of a hemispherical shell with an inside diameter of 12 ft. If the igloo is constructed of snow blocks having a uniform thickness of 2 ft and weighing 40 lb per cu. ft, find the weight of the igloo, neglecting the entrance. Also, if fresh air contains 0.04 per cent carbon dioxide, find the amount of this gas in the igloo when freshly ventilated.
Cylinders
A cylinder is a three-dimensional solid shape with two parallel and congruent circular bases, joined by a curved surface at a fixed distance. A cylinder has an infinite curvilinear surface.
Cones
A cone is a three-dimensional solid shape having a flat base and a pointed edge at the top. The flat base of the cone tapers smoothly to form the pointed edge known as the apex. The flat base of the cone can either be circular or elliptical. A cone is drawn by joining the apex to all points on the base, using segments, lines, or half-lines, provided that the apex and the base both are in different planes.
An igloo or Eskimo hut is built in the form of a hemispherical shell with an inside diameter of 12 ft. If the igloo is constructed of snow blocks having a uniform thickness of 2 ft and weighing 40 lb per cu. ft, find the weight of the igloo, neglecting the entrance. Also, if fresh air contains 0.04 per cent carbon dioxide, find the amount of this gas in the igloo when freshly ventilated.
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