vertical distance between G and H=400-250=150m horizontal distance between G and H=4cmx10000=400m (a) gradient of road GH=vertical distance/horizontal distance=150/400=3/8 (b) tanΘ=3/8, Θ=20.6 degrees (3 sig fig) (c) length of road GH=sqrt (150^2+400^2)=427.2 m (4 sig. fig)
s1 Unit is cm , 2 : 5,000,000 s2 210 km = 21,000,000 cm s3 2 : 5,000,000 = ans : 21,000,000 s4 5,000,000 * ans = 5.000.000 ans s5 2 * 21,000,000 = 42,000,000 s6 5,000,000 ans = 42,000,000 s7 42,000,000 / 5,000,000 = ans s8 ans = 8.4cm
...have enough time to visit them on 18/4 too. Can just walk to...勇記越南餐館 for dinner, and walk to The Crown Entertainment... are lots of maps and pamphlets for ...
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1a, 7.5cm(0.75*1000/100) b. 1cm:50m (15*a=750) 2a. 1.5km(0.25*6) b. 2.5cm(1.5*1000*100/60000) 3 5:9 (4.5*1000*100a=250000b) 4. 1:400000(1.5/(30*(12/60)*1000*100))
a, 1:2 000 000 b, 2.3*10 *2 000 000 =46 000 000mm = 46km 唔系幾明.點解個tips話 the scale of the map is 1:90 000 000 ??
