Q. 134.0( 6 Votes )

Answer :

Slant height, l =

⇒ l = 25cm

∴ Slant height of the bucket, l = 25cm

Curved surface area = π(r’ + r’’)l + π r’’^{2}

= π(25 + 10)(25) + π (10)^{2}

=3061.5 cm^{2}

Cost of making bucket per 100 cm^{2} = Rs70

Cost of making bucket per 3061.5 cm^{2} =

∴ Total cost = Rs2143.05

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