I used 3.14 for pi to solve easier.
6. 6.28
7. 21.98
8. 94.2
Answer:
2 animals
Step-by-step explanation:
Number of animals=40
Fraction of fish=3/4
=>number of fish=3/4*40=30
Fraction of cats=1/5
=>number of cats=1/5*40=8
Animals which are not cats or fish are=total number of animals-(number of cats + number of fish)
Animals which are not cats or fish=40-(8+30)
40-38
2 animals
1-8sin^2 Acos^2A or 1-8sin^2A
