Question Number 52182 by mr W last updated on 04/Jan/19
Commented by mr W last updated on 04/Jan/19
$${A}\:{container}\:{in}\:{the}\:{form}\:{of}\:{a}\:{pyramid} \\ $$$${should}\:{be}\:{formed}\:{using}\:{three}\:{steel} \\ $$$${plates}.\:{The}\:{openng}\:{is}\:{a}\:{triangle}\:{with} \\ $$$${sides}\:{a},{b},{c}.\:{The}\:{volume}\:{of}\:{the}\:{container} \\ $$$${is}\:{V}. \\ $$$${Find}\:{the}\:{side}\:{lengthes}\:{of}\:{the}\:{steel}\:{plates}, \\ $$$${such}\:{that}\:{they}\:{need}\:{minimal}\:{material} \\ $$$${to}\:{form}\:{the}\:{container}. \\ $$