Answer:
20
Step-by-step explanation:
Let the number be X
400% of X = 80
400/100 × X = 80
4X = 80
X = 20
Answer: 20
There is no rectangle but the formula is
V≈318.09ft³
V=πr2h/3
=π·4.52·15/3
≈318.08626ft³
Am sure boys are 13and girls also 13