Can someone help me with this question pleaseS

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Alayna wonders how much water it would take to fill her cup she drops her pencil in her cup and notices that it just fits diagonal the pencil is 17 cm long and the cup is 15 cm tall how much water can the cup hold

1/4x+5=3/4. i can't get access to the answer to this question! and, my request on "contact us" will not go