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find the total surface area of a tetrahedron whose base is an equilateral triangle of edge a and whose lateral edges area each equal to b.
find the volume and total surface area of a square pyramid whose base is 10m and altitude 9m, respectively.
Could you help me to answer my assignment? thanks in advance
A dungeon is constructed with a rectangular floor 10m by 20m. The walls are vertical and 30m high. Of there are no windows, find:
a. the total area of the ceiling, walls and floor.
b. the storage space of the dungeon.