A triangular pyramid has a triangular base of base 30 cm and perpendicular height 12 cm; the pyramid

Question

A triangular pyramid has a triangular base of base 30 cm and perpendicular height 12 cm; the pyramid height is 20 cm. Find the total volume, using $\pi=3.142$ where needed. Give decimal answers to 2 d.p. $h=20\text{ cm}$ Triangular base Central section

Accepted Answer

Base area $=\dfrac12(30)(12)=180\text{ cm}^2$. $V=\dfrac13(180)(20)=1200\text{ cm}^3$.

Volumes of pyramids, cones and hemispheres

Volumes of pyramids, cones and hemispheres

Solution:

Solution locked