1. 5+8 ÷2-7
12× 3-42+20
please help me now
I will report your answer if bad

1. 2

2. 14

5+(8÷2)-7

5+4-7

=2

(12x3) - 42 + 30

36-42+30

=14

what do you mean by fog

step-by-step explanation:

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