Question

the price of a coil depends upon the product of its thickness and the square of the diameter. The ratio of thickness of two coins is 8:9. if the value of the second coin is double of the first coin then what will be the ratio of their diameters?​

Answer 1

Answer:

Let the diameters and thickness of the two coins be d

1

,t

1

and d

2

,t

2

respectively then

Given,

v

2

v

1

=

d

2

2

d

1

2

×

t

2

t

1

⇒

1

4

=

3

2

4

2

×

t

2

t

1

⇒

4

9

=

t

2

t

1

∴

t

2

t

1

=

4

9

×

2

2

=

8

18