Three-Dimensional Shapes Part 1: Types, Calculating Surface Area

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Enough of this two-dimensional, stuck in one plane rubbish! The real world has three spatial dimensions! Technically more, but we very clearly interact with three all the time, so it's time to start talking about three-dimensional shapes like pyramids and prisms and cylinders and cones, and the characteristics they possess.

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You're to good sir. You deserve an award

kesnielchigbo
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The formula in getting the surface area of a cylinder is 2πr(r+h) it works

jvd.p
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In calculating the volume of a ball, did we put the four because the ball is like four cubes without the extra edges?

نور-هن
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Can you explain how we got surface area formula for sphere

lidyaangelin
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4:30 hello, prof. dave!
why did not you mutiply pi with other numbers?

volatilesteps
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Can someone explain how we got 20 when me calculated the are of the rectangle for a cylinder? I keep getting an answer of 62.8

サラ-vs
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Judt to be clear, these arnt Perimeters of these shapes right?

zackgamer