Question

the product of 18 and another number​

Answer 1

Answer:

How to write the product of 18 and another number in math:

18$x$

Step-by-step explanation:

18$x$ = 18 x another number

Answer 2

Answer:

Let the radii of 2 cylinders be 2r and 3r respectively and their heights be 5h and 4h respectively.

Let S

1

and S

2

be the curved surface areas of two cylinders.

S

1

→ CSA of cylinder of radius 2r and height 5h=S

1

=2×π×2r×5h=20πrh

S

2

→ CSA of cylinder with radius 3r and height 4h=S

2

=2×π×3r×4h=24πrh

∴

S

2

S

1

=

24πrh

20πrh

=

6

5

∴S

1

:S

2

=5:6