Surface Area of Pyramids Quick Check

Question

5 of 55 of 5 Items
Question
When creating the formula for surface area of a triangular pyramid (SA=12ab+3(12lb))
, what formula is being used?(1 point)
Responses

area of a square
area of a square

volume
volume

perimeter
perimeter

area of a triangle

Answer 1

The formula for the surface area of a triangular pyramid you've mentioned, \( SA = \frac{1}{2}ab + 3\left(\frac{1}{2}lb\right) \), uses the area of a triangle. Specifically, \( \frac{1}{2}ab \) represents the area of the base triangle, while \( \frac{1}{2}lb \) represents the area of the triangular lateral faces.

So, the correct response is:

area of a triangle