Answer:
The relation for the area of circle with radius , Diameter , circumference is
A=
× radius²
A = 
A = 
Step-by-step explanation:
Given as :
The formula for the area of circle =
× radius²
I.e A =
× radius²
<u>Now If we know radius then </u>
Area calculated as A=
× radius²
<u>If we know Diameter then</u>
Area calculated as
× (
)²
Or, A =
× (
)²
I,e A = 
<u>If we know the circumference then</u>
∵ circumference = c = 2 ×
× radius
or, c = 2 ×
× r
from here we calculate radius
I.e r = 
And So , Area ( A ) =
× radius²
I.e A =
× (
)²
Or, A = 
Hence The relation for the area of circle with radius , Diameter , circumference is
A=
× radius²
A = 
A =
Answer
Answer:
(B) the first box
..................................
The formula for circumference is 2(pi)r, so first you would divide by 2, which is 56.52 (about) then divide by pi and you get 18. So the radius is 18, so multiply 18 by 2 and you get 36.
So therefore, the diameter is 36 inches
Answer:
a) about 100
b) 600 phones sold total
c) i think it's the phones
Step-by-step explanation:
my bad if u get it wrong or anything