标题: GWD27-16 [打印本页]

作者: 羽依依 时间: 2009-1-8 07:35 标题: GWD27-16

Q16:

On a map Town G is 10 centimeters due east of Town H and 8 centimeters due south of Town J. Which of the following is closest to the straight-line distance, in centimeters, between Town H and Town J on the map?

A. 6

B. 13

C. 18

D. 20

E. 24

Answer:

作者: szgmater 时间: 2009-1-8 19:15

答案是 B

H到J的距离是 sqare root(10^2+8^2) =根号164

只有B和根号164最接近

作者: yumeeiko 时间: 2009-1-9 20:41

=√(100+64)

=√164

=√(4×41)

=2√41

=2×6.4

~13

Answer is B.

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