Answer:
Given that the equation of a circle is :

Answer:20
Step-by-step explanation:
3.1 *4.2=13.02 12.4*21=260.4 260.4/13.02=20
The answer would be 78 because 10% of 60 is 6. 6 x 3 = 18 60+18=78
Answer:
Volume = 100 
Step-by-step explanation:
Volume, V= Bh
length = 10 inches
width = 5 inches
height = 2 inches
So that,
B = 5(10)
= 50 
B = 50 
Then,
V = (50)(2)
= 100
v = 100 