Question

Please help

1) Find the square roots on the following by the means of factors
a) 529
b) 1764

2 ) find the smallest square number which is divisible by each of the numbers 6,9and 15

3 ) An airplane covers1020 km in an hour. How much distance will it cover in 25/6 hours?

Answer 1

in my opinion I think Factor B 1764 is a better sophisticated answer for two and three