Classify the following triangle by its side lengths:

Isosceles triangle

Step-by-step explanation:

all sides the same=scalene triangle

2 sides the same=isosceles triangle

all sides the same=equilateral triangle

Area of full pyramid: = 1/3 x area of base x height

Area = 1/3 x 64^2 x 36 = 49,152 cubic meters

Area of top section: 1/3 x 16^2 x 12 = 1,024 cubic meters

Total volume of truncated pyramid = 49,152 - 1,024 = 48,128 cubic meters