Question

The diameter of base of a right circular cone is 3.5 cm and 6.0 cm high. Find its Total Surface Area.​

Answer 1

Answer:

here is your answer .. have a look

Answer 2

Solutions:

Radius of first cone, r

1

=1.6cm

and height of first cone, h

1

=3.6cm.

Radius of second cone, r

2

=1.2cm

and height of second cone, =h

2

cm.

Now, volume of the first cone=volume of second cone

⟹

3

1

πr

1

2

h

1

=

3

1

πr

2

2

h

2

⟹ (1.6)

2

×3.6=(1.2)

2

×h

2

⟹ h

2

=6.4cm.

Hence, option A is correct.

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