Regular triangular pyramid

Calculate the volume and surface area of the regular triangular pyramid and the height of the pyramid is 12 centimeters, the bottom edge has 4 centimeters and the height of the side wall is 12 centimeters

Correct answer:

V =  96 cm3
S =  96 cm2

Step-by-step explanation:

h=12 cm a=4 cm h2=12 cm  S1=a h2/2=4 12/2=24 cm2  V=31 S1 h=31 24 12=96 cm3
S=4 S1=4 24=96 cm2

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