Current location - Health Preservation Learning Network - Slimming men and women - In the S-ABCD of a regular quadrilateral, SO is the height of the quadrilateral, SM is the oblique height, SO=8, sm =11) to find the side length.
In the S-ABCD of a regular quadrilateral, SO is the height of the quadrilateral, SM is the oblique height, SO=8, sm =11) to find the side length.
(1) even OM, OM = V (1 1 2-8 2) = V 57, then the side length of the bottom surface is 2v57, OC=V 1 14, so the side length is v (/kloc-)

(2)s plane =1/2smxbc =1/2x11x2v57 =1/v57.

(3)S base =2v57x2v57=228.

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