Question

a radius and height of a cylinder are in the ratio 5:7 and the volume is 549.78 cubic cm. Find its total surface area

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Let the radius of the cylinder be 5x and height be 7x.

Volume=4400 cm

3

We know that the volume of the cylinder is

=πr

2

h

So,

4400=

7

22

×(5x)

2

×7x

4400=22×25x

2

×x

4400=22×25x

3

x

3

=8

x=2

So, the radius will be 5×2=10 cm

Hence, this is the answer.