The triangles are similar. the area of the larger triangle 603cm2. what is the area of the smaller triangle? small triangle: 18cm large triangle: 54cm a. 10.5cm2 b. 31.5cm2 c. 67cm2 d. 189cm2

The smaller triangle is scaled by a factor of (18 cm)/(54 cm) = 1/3 of the larger triangle. The ratio of areas is the square of that scale factor.

small triangle area = (1/3)^2 × large triangle area

... = (1/9) × 603 cm^2

... = 67 cm^2

The appropriate choice is

... C. 67 cm^2

step-by-step explanation:

1st part is 64,000,000

2nd part 500,000

step-by-step explanation: