The base of a pyramid is an equilateral
triangle of side 6 ft. The length of each
slant edge is 5 ft. What is the total surface
area of the pyramid?
I the pune. What is y, ength of

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)