What is the sin ratio for sin a sin c cos a cos c using 4 5 and 3

15 point ! ~ see if you know the answer to both you!

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft