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Geometry Question

Chuck38
By Chuck38
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How would I find the slant height of a right circular cone given the radius is 10 and the surface area is 220pi. 

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Posted to quick.. I think I figured it out.

 

If the Surface Area is 220pi, then to find the Lateral Area I would take r^2pi and subtract it from the Surface Area giving me the lateral area. Now that I have the lateral area, all I have to do is divide the lateral area by the radius and I will get the slant height.

 

Slant Height = 12 sq. units

Lateral Area = 120pi sq. units.

CPU: i3-8100 | Motherboard: ASRock Z370M-itx a/c | GPU: Zotac GTX 1060 6GB AMP! Edition | RAM: Crucial Ballistix DDR4-2400 8GB | Storage: WD Blue 1TB HDD/ Crucial 240GB SSD | PSU: EVGA 750w G2 | Case: Fractal Design Define Nano S | OS: Windows 10 Home

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