Write 0.4 as a fraction.
2 answers:
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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