Find the surface area. I don't really understand the perspective of this pyramid.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?