Can u help me with these problems I did the rest but I'm not sure how to do these

1) Find two positive numbers whose product is 100 and whose sum is a minimum. 2) The perimeter of a rectangle is 56. Find the length and width of such a rectangle that would have the largest area. 3) To carry a suitcase on an airplane, the length+width+height of the box must he g 62 inches. Assuming the height is xed, show that. the maximum volume is 1 2 V = h. (31 51:.) What height allows you to have the. largest vollnne'? Hint: treat the. height h. as another constant, not as a variable. It is some xed value. Section 4.6 Find the limit, using lihopitalis Rule where appropriate. If there is a more elementary method, consider using it. 4) lim $2"; 33133 9 5) I11}? 13:; (Hint: think about which Quadrant you are in if you are approaching g 2 from the left) ' l+cos 6' 6) (51; icosl'? 7) lirn 1 II a