15 * 25 = 375 <=== simple multiplication
Length would be 2 as well as for the width i think
910,000
the ten thousand place is the number 5 times to the right of the decimal
you round the 0 up or down depending on the number to the right of it, in this case, that number to the right is 5, so round up
Not enough data given here. Incomplete question.
Answer:
GCF = 1
for the values 15, 17, 21
Solution by Factorization:
The factors of 15 are: 1, 3, 5, 15
The factors of 17 are: 1, 17
The factors of 21 are: 1, 3, 7, 21
Then the greatest common factor is 1.