gigi1103
30.06.2019 •
Mathematics
Ahollow sphere sits snugly in a foam cube so that the sphere touches each side of the cube. find the volume of the foam.
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Ответ:
π
V-foam = 4r³( 2 - )
3
Step-by-step explanation:
Let the radius of the sphere be r. Then the volume of the sphere is
V = (4/3)(π)(r³).
Next, recognize that the side length of the cube is 2r, and that the volume of the cube is thus
V = (2r)³, or 8r³.
Then the volume of the foam is equal to the volume of the cube less the volume of the sphere:
V-foam = 8r³ - (4/3)(π)(r³). This could be factored into
π
V-foam = 4r³( 2 - )
3
Ответ:
124*.70 (if your not paying 30% your paying 70%)= 86.80