Hurry please! A grain silo is 75 feet high and has a diameter of 22.5 feet. The farmer wants to build a second grain silo that is 50 feet high and similar in size to the original grain silo. What will be the diameter of the new grain silo?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!