# Quadrangular pyramid

Calculate the surface area and volume of a regular quadrangular pyramid:

sides of bases (bottom, top): a1 = 18 cm, a2 = 6cm

angle α = 60 ° (Angle α is the angle between the sidewall and the base plane.)

S =? , V =?

sides of bases (bottom, top): a1 = 18 cm, a2 = 6cm

angle α = 60 ° (Angle α is the angle between the sidewall and the base plane.)

S =? , V =?

### Correct answer:

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