Not enough Information. I could say 50 and it would work. I could say 68 and it would work. Any even number thats under 80 but higher than what you think her eldest son is.
Answer:
h= 24
Step-by-step explanation:



r= 7
1230.88=3.14×7^2×h/3
1230.88= 153.86h/3
h=1230.88/153.86
h= 24
Answer:
Australia.
Bangladesh.
England.
India.
New Zealand.
South Africa.
Sri Lanka.
West Indies.
Step-by-step explanation:
none
hope this helps