Square garden

On the plan with a scale of 1:1500 is drawn as a square garden with area 81 cm2. How many meters is long garden fence? Determine the actual acreage gardens.

Result

x =  540 m
S =  18225 m2

Solution:

$x=4 \cdot \ \sqrt{ 81 } \cdot \ 1500/100=540 \ \text{m}$
$S=81 \cdot \ 1500 \cdot \ 1500/100/100=18225 \ \text{m}^2$

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