Constructing 67634

During the construction of a 140-meter-long gas pipeline, a pit with vertical walls 1.5 m deep and 1 m wide must be created.

A) How many cubic meters of soil must be dug up?

B) We spread the excavated soil evenly on a field with dimensions of 70 m and 120 m. How high will the layer of new clay be on the court?

Correct answer:

V =  210 m3
h =  2.5 cm

Step-by-step explanation:

a=1.5 m b=1 m c=140 m  V=a b c=1.5 1 140=210 m3
x=70 m y=120 m  S=x y=70 120=8400 m2 V = Sh  h1=V/S=210/8400=401=0.025 m  h=h1 cm=h1 100  cm=0.025 100  cm=2.5 cm=2.5 cm

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