Mathematics for IGCSE & O level - Estimation (Section 3 - No. 3)
When estimating the area of a rectangle, the length is 17.1cm and the width is 6.3 cm. What is the estimated area?
100 cm²
110 cm²
120 cm²
110 cm
解释
17.1 rounds to 20 and 6.3 rounds to 6. 20 x 6 = 120. Therefore the nearest correct answer should be 120 cm².