Mathematics for IGCSE & O level - Estimation (Section 2 - No. 2)
If the height of a person is approximately 1.7 m, how would you estimate the height of a building?
By knowing the height of the building.
By comparing the building to an object of a known height.
By using a measuring tape.
By measuring the height of a person.
解释
Comparing with known values helps estimate.