An area cannot be 30m since that is a linear measure, not the measure of an area.
The lowest perimeter, for an area is attained by a circle. So for an area of 30 m2 this was attained by a circle of radius R, then
Ï€R2 = 30 so that R2 = 30/Ï€ and R = sqrt(30/Ï€)
The perimeter = 2*Ï€*R = 2*Ï€*sqrt(30/Ï€) = 2*sqrt(30*Ï€) = 19.42 metres
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Somewhat vague, but most likely 170cm.
2*L + 2*W = 30m L<2*W So, 2*L + L < 30m L < 10m
30 meters (7.5m x 4 sides = 30m)
22
Perimeter = 4*Side so that Side = Perimeter/4 Area of a rhombus = Side * Altitude so Altitude = Area/Side = Area/(Perimeter/4) = 4*Area/Perimeter