Question Number 71265 by ajfour last updated on 13/Oct/19
Commented by ajfour last updated on 13/Oct/19
$${Find}\:{radius}\:{of}\:{yellow}\:{sphere}\:{x}, \\ $$$${that}\:{touches}\:{the}\:{other}\:{sphere}, \\ $$$${lateral}\:{surface}\:{of}\:{cone}\:{and}\: \\ $$$${cone}\:{cover}\:{plate}. \\ $$