Which of the following best explains why the vertical height $h$ cannot be used directly as the height of the triangular faces when calculating a pyramid's surface area?

The total surface area of a sphere is $100\pi\text{ cm}^2$. What is the diameter of the sphere?

A cone has a base area of $9\pi\text{ cm}^2$ and a curved surface area (lateral area) of $15\pi\text{ cm}^2$. Determine the slant height of the cone.

A right cone has a radius of $6\text{ cm}$ and a vertical height of $8\text{ cm}$. What is the ratio of its base area to its curved surface area?

Fill in the Blank: When using the multi-step method for calculating the surface area of a complex solid, identifying each individual face first is essential to ensure that no ________ are omitted from the final sum.