Question

the sub duplicate ratio of the ratio a:b is the ratio √a:√b

the sub duplicate ratio of the ratio a^2:b^2 is the ratio a:b

21. The sub duplicate ratio of the ratio 16:25 is.
1) 4:3
2)5:4
3) 4:5
4)5:3
22. The sub duplicate ratio of the ratio 3^2:5^2 is.
1) 5:3
2) 3:5
3) 9:25
4) 25:9​

Answer 1

Answer:

21. (3) 4:5

22. (2) 3:5

Step-by-step explanation:

21. The sub duplicate ratio of the ratio 16:25

16:25 can be written as 4² : 5²

Since, the sub duplicate ratio of the ratio a^2:b^2 is the ratio a:b

==> 16:25 ---> 4:5

22. The sub duplicate ratio of the ratio 3^2:5^2

Since, the sub duplicate ratio of the ratio a^2:b^2 is the ratio a:b

==> 3²:5² ---> 3:5

Please mark me as Brainleist ☺️