The area of circle of diameter 10 inches is 25π in.² and,
area of circle of radius 8 cm is 64π cm².
How is Area of circle is calculated ?
Area of circle is calculated using formula :
A = πr²
1) It is given that diameter of circle is 10 inches then the radius will be half of it that is :
d = 10 inches
r = 5 inches
Now calculating the area of circle using the above formula :
A = πr²
A = π(5)²
A = 25π in.²
2) It is given that radius of circle is 8 cm then calculating area using above formula :
A = πr²
A = π(8)²
A = 64π cm²
Therefore, the area of circle of diameter 10 inches is 25π in.² and,
area of circle of radius 8 cm is 64π cm².
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