Truncated cone surface area

[jaanus_raamatG39EU]

Hello

I have a pole which is truncated cone 120 mm diameter at bottom and 75 mm at height. Inventor shows me the surface area 2, 45 m2 (dim, tool).

But if to google the tool for truncated cone calculation it is 4,96 m2

https://rechneronline.de/pi/truncated-cone.php

[JDMather · Accepted solution]

Where are you getting that number?

Inside conic surface

Outside conic surface

Bottom trimmed planar surface

Top trimmed planar surface

Can you show your calculator entries?