To find it directly
A = 2 pi r h
A is proportional to rh
factor 2
A is multiplied by 2 * 2 = 4
factor 3
3 * 3 =9
factor 5
5 * 5 = 25
factor 10
10 * 10 = 100
(b) the increase in A by factor x is x^2
c(20)^2 = 400
Answer:
76
Step-by-step explanation:
okay so 13=13 d = t
13×d = t
13×6 = 76
Answer:
C , 18
Step-by-step explanation:
An expression for “7 divided by c” is 7/c or 7 ÷ c
