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Q.

Find the scale if actual size $= 12 m$ and drawing size $= 3 cm$ .

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a

1 cm : 4 m

b

2 cm : 3 m

c

5 cm : 4 m

d

1 cm : 5 m

answer is A.

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Detailed Solution

It is given that, actual size

= 12 m

and drawing size

= 3 cm

.
We know that,

Scale = \frac{Size Drawn}{Actual Size}

\Rightarrow Scale = \frac{3 cm}{12 m}

\Rightarrow Scale = 1 cm : 4 m

Hence, option (1) is correct.

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Find the scale if actual size =12m and drawing size =3cm.