Answer:
(a) 3.14
(b) 3.1416
(c) 3.141593
Step-by-step explanation:
The first several digits of n are known to be x = 3.14159265358979.
(a) To three significant figures, x is 3.14.
(b) To five significant figures, x is 3.1416.
(c) To seven significant figures, x is 3.141593.