Pyramid 1
Pyramid 2

Pyramid 1 is a triangular pyramid. The base has a base of 12 and height of 2.5. A side has a base of 12 and height of 13.1. 2 sides have a base of 6.5 and height of 14.
[Not drawn to scale]

Pyramid 2 is a triangular pyramid. The base has a base of 12 and height of 4.5. A side has a base of 12 and height of 6.5. 2 sides have a base of 7.5 and height of 8.
[Not drawn to scale]

The base of each pyramid is an isosceles triangle. Which has the greater surface area?
Pyramid 1 is greater by 58.6 square units.
Pyramid 1 is greater by 70.6 square units.
Pyramid 2 is greater by 12 square units.
Pyramid 2 is greater by 24 square units.