Question

What is the surface area of a regular square pyramid with a slant height of 12 cm in a lateral edge of 13 cm?

Answer 1

Answer:

340 cm squared

Step-by-step explanation:

$l=2\sqrt{13^{2} -12^{2} }=10cm$

$A=l^{2} +2l*h\\10*10+2*10*12=340cm^{2}$