Number increased = 321 - 121 = 200
Percentage increased, 200/121 * 100 = 165.29%
Hope this helps!
Answer:
100°
Step-by-step explanation:
the total of all angles around O on one side of AD is 180° (as that would represent a half-circle).
and the sum of the arc angles AB + BC + CD covers the whole 180°.
so, we have
180 = 55 + BC + 25
180 = 80 + BC
BC = 100°
Answer:
40% decrease
Step-by-step explanation:
The volume of a sphere is 
So, if the small sphere has radius
and the largest sphere has radius
, their volumes are

So, their ratio is
