Answer:
the length is 3.9
Step-by-step explanation:
multiply 1.3 by 3
24
15 =4
15x 6=90
4x6=24
The answer is 12.6
419 is 420 because we are estimating so find 1% of 420 which is 4.2 then multiply 4.2×3 to get 12.6