I dont know what 12 / 63(fraction) is simplified can someone help
also 12 isn't 1

Step-by-step explanation:

When simplifying fractions, you need to find the biggest common factor between the numerator (12) and denominator (63). In this case, the biggest common factor is 3.

Thus:

Numerator = 12 ÷ 3

                  = 4

Denominator = 63 ÷ 3

                      = 21

=

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6