Please help if you answer and some extra points!

The area of square garden is 300m squared. how long is the diagonal?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

Find two numbers if their sum is 91 and the ratio is 6: 7?