find the curved surface area and total surface of a hollow hemisphere whose outer and inner radii are 4.2 cm and 2.1 cm respectively
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T. S. A.=3×22/7×4.2^
C.S.A.= 2× 22/7 ×r^2
C.S.A.= 2× 22/7 ×r^2
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Hello.....
T.S.A = 3×pie×r^2
C.S.A = 2×pie×r^2
MARK ME AS BRAINLIST
T.S.A = 3×pie×r^2
C.S.A = 2×pie×r^2
MARK ME AS BRAINLIST
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