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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?

Creeperhissboom  Apr 12, 2018
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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 

CPhill  Apr 12, 2018
edited by CPhill  Apr 12, 2018

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