(20 + 12) - 8, since the question states n is EIGHT less than the sum of 20 and 12.
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
Remember that

so

find the individual square roots

=

answer is 1/10
6 hope i could help good luck