The inner diameter of a circular well is 7 meter and it is 10 meter deep. Its inner curved surface area is(trisha)
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Inner radius (r) of circular well
= ( 7 / 2 )m - 3.5m
Depth (h) of circular well
= 10m
Inner Curved Surface Area = 2πrh
= ( 2 × 22/7 × 3.5 × 10 ) m²
= ( 2 × 22/7 × 35/10 × 10 ) m²
= ( 2 × 22 × 5 ) m²
= ( 44 × 5 ) = 220 m²
Its inner curved surface area is 220 m²
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