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54m=540dm
25%-x
100%-540
x=(25×540):100=135dm
h=13% z x
13%-h
100%-135dm
h=(13×135):100=17.55dm
P=0.5×(135dm+540dm)×17.55dm=5923,125dm²
Pozdrawiam :)
a= 54m = 540 dm
b = 25% * 540 dm = 135 dm
h= 13% * 135 dm = 17,55 dm
P = 1/2 (540dm + 135dm) * 17,55 dm = 1/2 * 675 * 17,55 ≈5923 dm²