Answer:
9/16 of the students
Step-by-step explanation:
first you can simplify 15/20 to 3/4
you can simplify 12/16 to 3/4
3/4*3/4=9/16
9/16
That is 12/16 of 15/20
= 3/4 * 3/4
= 9/16
18 inches
formula is V = π* r^2* h/3.
h = 21. 21/3 = 7.
7*3.14 = 21.98.
1,780.38/21.98 = 81.
√81 = 9.
r = 9
d = 2r
9*2 = 18 inches.
2z-8y
9.
hope this helps :)