Question

MEDAL


A lake was measured with an optical laser ranging instrument as shown in the drawing. Its scale is 1 cm = 1 km.

How wide is the lake?

46.5 m
465 m
4,650 m
46,500 m

Answer 1

@Mr.ClayLordMath

Answer 2

@dpasingh @Hero

Answer 3

@ash2326

Answer 4

@Nurali

Answer 5

Let BC be the width of the lake
so \[\tan 30^0 = \frac {AB}{BC} \rightarrow \frac{1}{\sqrt{3}} = \frac {4.65}{BC}\]
\[\frac{1}{\sqrt{3}} = \frac {4.65}{BC} \]
\[BC=4.65\sqrt{3} =4.65 \times 1.73 =8.0445 \approx 8\]
Hence width of the lake is 8 KM

Answer 6

Your ans is not matching with waht i calculated, pls chek the figure properly and then report me.

Answer 7

mmmm.i think that the answer don't need to have the same value meters have : my answer was option 3

Answer 8

just see the scale 1cm = 1 km

Answer 9

so 1 cm = 1000m

Answer 10

correct?

Answer 11

yes

Answer 12

so!!!!

Answer 13

According to given info the width of the lake must be 8 KM

Answer 14

OMG!! we dont have this answer

Answer 15

I am pretty sure the answer would be 4,650 because since 1cm=1km, you would convert 4,65cm into 4.65km. And 4.65km=4,650m :) hope I helped