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Mathematics 21 Online
OpenStudy (anonymous):

Find the volume for the regular pyramid. V = ? Find total area for the regular pyramid. T. A. =? https://media.glynlyon.com/g_geo_2012/8/groupi75.gif

OpenStudy (akashdeepdeb):

Common formula: 1/3 * area of hexagon * height.

OpenStudy (anonymous):

Total area = total surface area?

OpenStudy (akashdeepdeb):

Yes.

OpenStudy (anonymous):

ok so in diagram 6 is the length along the edge correct? so the total area is (1/2)(4*6)* 6 + area of hexagon

OpenStudy (anonymous):

area of each triangle is 1/2 B*H and there are 6 sides

OpenStudy (anonymous):

so total area is 72 + area of the hexagon base

OpenStudy (anonymous):

the hexagon base made of 6 equilateral triangles of sides with 4 the area of the equilateral triangle is 1/2 b*h to find the height we find |dw:1378146256423:dw| this is a 30.60,90 triangle where the height is 2*sqrt(3)

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