How to find the surface area of a triangular pyramid with slant height?

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so

Here is another math questions. i will keep asking different questions. 4^2x=6

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.