What is the cross sectional area of a circular ring of d = 38 mm d= 32 mm
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Cross-sectional area of a circular ring is given by the formula,
,
where, R is the outer radius and r is the inner radius.
Here, R = 38mm and r = 32mm
So, A = 3.14 ()
A = 3.14 × (1444 - 1024)
A = 3.14 × 420
A = 1318.8
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