Volume of a sphere:
V = (4/3)πr³
Circumference of a sphere:
C = 2πr
Surface area of a sphere:
A = 4πr²
above are important sphere related equations
so to find the surface area plug in values for equation
A= 4πr²
= 4 × 3.14 × 5.4 ×5.4
= 366.25 mm²
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