PLZ HELP ITS 20 POINTS AND THIS IS THE LAST QUESTION TO MY TEST

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Factor the expression using gcf 9b+45