Question

34. Find the number of coins of 1.5 cm diameter and 0.2 cm thickness to be melted to form a
segment of length 8 cm and divide it in the ratio
right circular cylinder of height 10 cm and diameter 4.5 cm.
​

Answer 1

Answer:

450

Step-by-step explanation:

Let n be the number of 1. cm diameter coins required to form a right circular cylinder of height 1 cm and diameter 4. cm.

Now,

Volume of right circular cylinder =n× volume of 1.5 cm diameter coin.

Therefore,

n=

π(

2

1.5

)

2

×

10

2

π(

2

4.5

)

2

×10

=

20×20

45×45

×

15×15×2

10×20×20×10

=9×10×5

=450

I hope it helps you