Find the surface area of the figure?

30.9

Step-by-step explanation:

side 1= 9

side 2= 9

side 3= 9

base 1= 3.9

sides you multiply the base x height and divide by 2.

that gives you 9 for each side

base is the same. base x height divide by 2

add them all up and you get your answer

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