The diameter........
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( i ) CSA of frustum - base area of top = area of metal sheet required
=> π l ( r + R ) - πR²
=> π 26 ( 20 ) - π15²
=> 520π - 225π
=> 927.14 cm²
( ii ) we should avoid bucket of odinary plastic cause its contains bacteria that can easily get mixed with anything stored in the bucket
hope it helped
:-)
=> π l ( r + R ) - πR²
=> π 26 ( 20 ) - π15²
=> 520π - 225π
=> 927.14 cm²
( ii ) we should avoid bucket of odinary plastic cause its contains bacteria that can easily get mixed with anything stored in the bucket
hope it helped
:-)
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