Question

please urgently needed...​

Answer 1

Volume of ice-cream filled = 4 × Volume of right circular cylindrical vessel

radius, r = d/2 = 21/2 cm ,

height, h = 38 cm

Volume of one vessel = πr²h

==> 22/7 × 21/2 × 21/2 × 38

==> 11 × 3 × 21 × 19

==> 33 × 399

==> 13167 cm³

Volume of ice-cream filled = 4 × Volume of one vessel

==> 4 × 13167

==> 52668 cm³

Volume of shape in which the ice-cream has to be filled = Volume of cone + volume of hemisphere ( at the top )

==> 1/3 πr²h + 2/3πr³

==> πr²h + 2πr³ / 3

==> πr² ( h + 2r ) / 3

==> 22/7 × 7/2 × 7/2 ( 12 + 2×7/2 ) / 3

==> 77 / 2 ( 19 ) / 3

==> 1463 / 2 / 3

==> 1463/6 cm³

Number of cones = Volume of ice-cream filled / volume of one cone

==> 52668 / 1463 / 6

==> 316008 / 1463

==> 216

216 such cones can be filled.