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Posted by on Sunday, July 14, 2013 at 9:57am.

Find the surface area and the lateral area of a regular square pyramid with base edge 6 and a lateral edge √34. PLEASE PLEASE HUHU Teach me how and what is lateral edge

  • GEOMETRY(SURFACE AREA) - , Sunday, July 14, 2013 at 5:00pm

    lateral edge is an edge from the base to the vertex. As opposed to a base edge.

    If the base edge is 6, the base diagonal is 6√2

    Now draw a right triangle from the center of the base to the vertex, including one base corner.

    (6√2/2)^2 + h^2 = (√34)^2
    18 + h^2 = 34
    h = 4

    So, now we have height 4 and base edge 6, so the faces are triangles with

    base = 6
    height = √(3^2 + 4^2) = 5

    lateral area is thus 4 * 1/2 (6)(5)

    add the square base if desired.

  • GEOMETRY(SURFACE AREA) - , Monday, October 14, 2013 at 3:04pm

    18.63

  • GEOMETRY(SURFACE AREA) - , Tuesday, April 19, 2016 at 9:53am

    idk lol

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