Question

8. A solid metallic hemisphere of radius 6.3 cm is melted and recast into a right circular cylinder of radius 9 cm. What is the height (in cm, correct to one decimal place) of the cylinder? 6.3 ???? ???????? ???? ?? ??? ??????? ???????? ?? ??????? 9 ???? ???????? ???? ?? ???? ??????? ???? ??? ???? ???? ??? ???? ?? ????? (???? ???, ?? ????? ????? ?? ???) ???? ??? (a) 1.9 (c) 2.5 SSC CHSL 4/08/2021 (Morning) (b) 2.7 (d) 2.1 9. A spherical metallic shell with 6 cm external radius weighs 6688 g, What is the thickness of the shell if the density of metal is 10.5 g per cm³? 6 ???? ????? ???????? ???? ?? ??????? ???? ?? ??? ?? ??? 66 88 ????? ???? ??, ??? ???? ?? ????? 10. 5 ????? ????? ????³ ?? ?? ??? ?? ????? ???? ????? (Take $\pi = \frac{22}{7}$) (a) 2 cm $\frac{1}{2}$ cm (c) $2 \frac{1}{2}$ cm SSC CGL Mains 15/10/2020 (b) 3 cm (d) 4 cm

          8.
A solid metallic hemisphere of radius 6.3
cm is melted and recast into a right
circular cylinder of radius 9 cm. What is
the height (in cm, correct to one decimal
place) of the cylinder?
6.3 ???? ???????? ???? ?? ??? ??????? ???????? ??
??????? 9 ???? ???????? ???? ?? ???? ??????? ???? ???
???? ???? ??? ???? ?? ????? (???? ???, ?? ?????
????? ?? ???) ???? ???
(a) 1.9
(c) 2.5
SSC CHSL 4/08/2021 (Morning)
(b) 2.7
(d) 2.1
9.
A spherical metallic shell with 6 cm
external radius weighs 6688 g, What is the
thickness of the shell if the density of
metal is 10.5 g per cm³?
6 ???? ????? ???????? ???? ?? ??????? ???? ?? ???
?? ??? 66 88 ????? ???? ??, ??? ???? ?? ????? 10.
5 ????? ????? ????³ ?? ?? ??? ?? ????? ???? ?????
(Take $\pi = \frac{22}{7}$)
(a) 2 cm
$\frac{1}{2}$ cm
(c) $2 \frac{1}{2}$ cm
SSC CGL Mains 15/10/2020
(b) 3 cm
(d) 4 cm

8.
A solid metallic hemisphere of radius 6.3
cm is melted and recast into a right
circular cylinder of radius 9 cm. What is
the height (in cm, correct to one decimal
place) of the cylinder?
6.3 ???? ???????? ???? ?? ??? ??????? ???????? ??
??????? 9 ???? ???????? ???? ?? ???? ??????? ???? ???
???? ???? ??? ???? ?? ????? (???? ???, ?? ?????
????? ?? ???) ???? ???
(a) 1.9
(c) 2.5
SSC CHSL 4/08/2021 (Morning)
(b) 2.7
(d) 2.1
9.
A spherical metallic shell with 6 cm
external radius weighs 6688 g, What is the
thickness of the shell if the density of
metal is 10.5 g per cm³?
6 ???? ????? ???????? ???? ?? ??????? ???? ?? ???
?? ??? 66 88 ????? ???? ??, ??? ???? ?? ????? 10.
5 ????? ????? ????³ ?? ?? ??? ?? ????? ???? ?????
(Take π = (22)/(7))
(a) 2 cm
(1)/(2) cm
(c) 2 (1)/(2) cm
SSC CGL Mains 15/10/2020
(b) 3 cm
(d) 4 cm

Added by Eva S.

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