Question

1) A solid metallic crylonders of height 15cm. & radier og con
28 melted to form make two conces in the ratio of volume
3:4 & of some height as 10cm. what is the percentage
drurease in the Hat surface area ? (CDs 2019)
(d) 100%
(b) 50%
(a) 25 %
(75%​

Answer 1

Answer: (a) 25%  is the correct option.