The area of one lateral face of a right pyramid with an equilateral triangular base is 75 square meters. If the slant height is 30 meters, what is the length of the side of its base, in meters?

 Apr 12, 2018

The face forms a triangle.....Area of triangle  =    (1/2) base * height


The slant height is the height of the triangle....so....


75  = (1/2) base *(30)

75 = 15 * base        divide both sides by  15

5 m  =   base 


So.....a side of  the base  = 5m 



cool cool cool 

 Apr 12, 2018
edited by CPhill  Apr 12, 2018

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