The figure below shows solid frustum of a pyramid with a square top of side 6cm and a square base of side 10cm. The slant edge of the frustum is 8cm.
![Mathf4et121p2qn19](https://www.easyelimu.com/images/form_4_past_papers/Form4_EndTerm1_2021/Maths_Paper1_Paper2/Mathf4et121p2qn19.PNG)
- Calculate the total surface area of the frustum
- Calculate the volume of the solid frustum.
- Calculate the angle between the planes BCHG and the base EFGH.