0000:00:00:00:00Start19Number 19ExplanationThe comparison between the size in the drawing and the actual size is as follows: drawing size:actual size=3:90\text{drawing size} : \text{actual size} = 3 : 90drawing size:actual size=3:90 If there is a rectangle with an area of 810 m2810 \text{ m}^2810 m2 and a width of 18 m18 \text{ m}18 m, then the length in the drawing is ....1.51.51.5 cm222 cm2.52.52.5 cm333 cm3.53.53.5 cm
19Number 19ExplanationThe comparison between the size in the drawing and the actual size is as follows: drawing size:actual size=3:90\text{drawing size} : \text{actual size} = 3 : 90drawing size:actual size=3:90 If there is a rectangle with an area of 810 m2810 \text{ m}^2810 m2 and a width of 18 m18 \text{ m}18 m, then the length in the drawing is ....1.51.51.5 cm222 cm2.52.52.5 cm333 cm3.53.53.5 cm