Question

Kierra draws a triangle with a base of 10 cm and a height of 15 cm. She dilates the triangle using a scale factor of 45
. Then, Kierra finds the difference between the two areas by subtracting. How much greater is the area of the original triangle than the area of the dilated triangle?(1 point)
Responses

54 cm2

54 cm squared

27 cm2

27 cm squared

75 cm2

75 cm squared

48 cm2

Answer 1

Original area = 1/2 · 10 · 15 = 75 cm².

Dilated scale factor = 4/5, so area scale = (4/5)² = 16/25.
Dilated area = 75 · 16/25 = 48 cm².

Difference = 75 − 48 = 27 cm².

Answer: 27 cm².