Answer:
Her estimate is greater than the actual height because both factors were rounded up.
Step-by-step explanation:
Given that:
Height per floor of doll house = 1.6m
Total number of floors in doll house = 2.5
Estimated height of doll house = 2 *3 = 6 meters
Actual height of doll house :
1.6m * 2.5 = 4 meters
Her estimate is greater than the actual height because both factors were rounded up.
Height per floor of 1.6m was rounded to 2m
Number of floors, 2.5 was rounded to 3
Hence, the cause of overestimation