What is the surface area of a square pyramid with a height of 12 mm and a base that measures 10 mm on each side? Round to the nearest square millimeter if necessary.

360mm^2

Step-by-step explanation:

Surface area of a square pyramid = Base area + Lateral area

Base area=10mm * 10mm

=100mm^2

Lateral area = (4) * (1/2) * (10) * √ (12) ^ 2 + (5) ^ 2)

= 260 mm^2

Surface area = Base area + Lateral area

=100mm^2 + 260mm^2

= 360mm^2