Find the number of coins, 1.5 cm is diameter and 0.2 cm thick, to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm.

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Solution

Volume of one coin

Volume of cylinder

So number of coins to be melted

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Similar questions

Q. The number of coins 1.5 cm in diameter and 0.2 cm thick to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm is
(a) 540
(b) 450
(c) 380
(d) 472

Q. Find the number of metallic circular disc with

1.5 c m

base diameter and of height

0.2 c m

to be melted to form a right circular cylinder of height

10 c m

and diameter

4.5 c m

The number of coins of $1.5 c m$ in diameter and $0.2 c m$ thick, to be melted to form a right circular cylinder of height $10 c m$ of diameter $4.5 c m$ is

(a) $540$ (b) $450$ (c) $380$ (d) $472$

Q. Question 14
Find the number of metallic circular disc with 1.5 cm base diameter and of height 0.2 cm to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm

Q. If some coins each of diameter

1.5 c m

and thickness

0.2 c m

are melted and a right circular cylinder of height

10 c m

and diameter

4.5 c m

is made, then find the number of coins required to make the right circular cylinder

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Find the number of coins, 1.5 cm is diameter and 0.2 cm thick, to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm.

Volume of one coin Volume of cylinder So number of coins to be melted

Volume of one coin

Volume of cylinder

So number of coins to be melted