A square pyramid has a slant height of 13 meters and a height of 12 meters. What is the surface area if the square base has sides of length 10 meters?

360 m2

320 m2

260 m2

120 m2

2 answers

Total area - area of base =
12,600 - 10,000 = 2600
http://easycalculation.com/area/pyramid.php

Typo somewhere
Oh, sorry, I used 100 and not 10 and 120 not 12
answer is 260 for sides without base
360 including base