Answer:
a) 14×10⁹ years
b) 4.4×10¹⁷ seconds
Explanation:
1 billion years = 1000000000 years
1000000000 years = 10⁹ years
14 billion years
= 14×1000000000 years
= 14000000000 years
= 14×10⁹ years
∴ 14 billion years = 14×10⁹ years
b) 1 year = 365.25×24×60×60 seconds
14×10⁹ years = 14×10⁹×365.25×24×60×60
= 441806400×10⁹ seconds
Rounding off, we get
= 4.4×10⁸×10⁹
= 4.4×10¹⁷ seconds
∴ 14 billion years = 4.4×10¹⁷ seconds
