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<blockquote data-quote="OKRuss" data-source="post: 4003307" data-attributes="member: 41777">Pool is 30&#039; in diameter.&nbsp; Here&#039;s the formula I used.Your radius squared is the radius multiplied by the radius. Finally, measure the pool&#039;s depth. For example, if your pool&#039;s diameter is 18 feet, your radius is 9 feet, and your depth is 4 feet: 3.14 × (9 x 9) × 4 x 7.5 = 7630.2 gallons.3.14 x (15x15) x 4 x 7.5 = 21,195.&nbsp; Be sure and do the multiplication in the parenthesis first.&nbsp; <img src="/images/smilies/smile.png"&nbsp; class="smilie" loading="lazy" alt=":)" title="Smile&nbsp; &nbsp; :)" data-shortname=":)" />Or this...<table style='width: 100%'><tr><th>Above Ground Swimming Pool Water Volumes by Size</th><th></th><th></th></tr><tr><td>24ft Round</td><td>11,895 gals</td><td>13,594 gals</td></tr><tr><td>27ft Round</td><td>15,054 gals</td><td>17,205 gals</td></tr><tr><td>30ft Round</td><td>18,585 gals</td><td>21,240 gals</td></tr><tr><td>33ft Round</td><td>22,488 gals</td><td>25,700 gals</td></tr></table></blockquote>

[QUOTE="OKRuss, post: 4003307, member: 41777"] Pool is 30' in diameter. Here's the formula I used. [B]Your radius squared is the radius multiplied by the radius[/B]. Finally, measure the pool's depth. For example, if your pool's diameter is 18 feet, your radius is 9 feet, and your depth is 4 feet: 3.14 × (9 x 9) × 4 x 7.5 = 7630.2 gallons. 3.14 x (15x15) x 4 x 7.5 = 21,195. Be sure and do the multiplication in the parenthesis first. :) Or this... [TABLE] [TR] [TH]Above Ground Swimming Pool Water Volumes by Size[/TH] [TH][/TH] [TH][/TH] [/TR] [TR] [TD]24ft Round[/TD] [TD]11,895 gals[/TD] [TD]13,594 gals[/TD] [/TR] [TR] [TD]27ft Round[/TD] [TD]15,054 gals[/TD] [TD]17,205 gals[/TD] [/TR] [TR] [TD]30ft Round[/TD] [TD]18,585 gals[/TD] [TD]21,240 gals[/TD] [/TR] [TR] [TD]33ft Round[/TD] [TD]22,488 gals[/TD] [TD]25,700 gals[/TD] [/TR] [/TABLE] [/QUOTE]

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