A square pyramid has a slant height of 17 inches and a height of 15 inches. What is its surface area if the square base has sides of length 16 inches?

224 in2

480 in2

800 in2

864 in2

Question

A square pyramid has a slant height of 17 inches and a height of 15 inches. What is its surface area if the square base has sides of length 16 inches? 

 224 in2 

 480 in2 

 800 in2 

 864 in2

anonymous · Answer

If a square pyramid's base has a side 's' and its slant height is 'l', its total surface area is given by,

s^2 + 2sl..................  see that its vertical height isn't used

= 16^2 + 2 * 16 * 17

=256 + 544

=800 square inches

anonymous · Answer

thnx!!!!