Question

find the curved surface area of a cone where radius=3.5m and height=12m​

Answer 1

Step-by-step explanation:

Hello Mate!

Volume of cone = ⅓ πr²h

Here, π = 22/7

r = 3.5 cm

h = 12 m or 1200 cm

Volume of cone = ⅓ × 22/7 × 3.5² × 1200 cm³

= 22 × 0.5 × 3.5 × 400 cm³

= 15400 cm³

Or volume of cone is 0.0154 cm³

Note : The volume if cone is ⅓ the volume oc cylinder. So if you are successful in remembering volume of cylinder then one third of it will be equal to volume of cone.

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