Q. 154.4( 8 Votes )

Answer :

Given:

Height of frustum, h = 16cm

Radius of lower and upper end of bucket, r’ = 8cm and r’’ = 20cm

Slant height, l =

⇒ l = 20cm

Volume =

= 10449.92 cm^{3}

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

= π(20 + 8)(20) + π (8)^{2}

= 624π cm^{2}

Cost of making bucket per 100 cm^{2} = Rs20

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

∴ Total cost = Rs.391.9

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSThe radii of the circular ends of a solid frustum of a cone are 33 cm and 27 cm and its slant height is 10 cm. Find its total surface area.NEXTA solid is in the shape of a frustum of a cone. The diameters of the two circular ends are 60 cm and 36 cm and the height id 9 cm. Find the area of its whole surface and the volume.