The net of a rectangular pyramid consists of one rectangular base and four lateral triangular faces. the net of the given pyramids can be drawn like this:
For the first pyramid:
For the second pyramid:
The lateral surface area of these pyramids can bu calculated with the following formula:
Where b is the length of the side and h is the slant height.
For the first pyramid we have:
Then, the lateral surface area of the first pyramid equals 85560 square meters.
For the second pyramid:
Then, the lateral surface area of the second pyramid equals 1404 square meters.