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The lateral area of a cone is 480 pie cm^2.The radius is 40 cm.Find the slant height to the nearest tenth. 12cm 11.5cm 7.7cm 6.7cm
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|dw:1368558013542:dw|
might be easier if i knew the formula for lateral area of a come
*cone
SA = πr^2 + πrl
SA= 3.14*40^2 + 3.14*40*480
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1602.1 +125.6
@amistre64
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