4 years ago

Which three-dimensional figure is formed by the rotation given?

Mathematics

2 answers:

SpyIntel [72]4 years ago

5 0

the first one it creates a bowl [ known as a paraboloid]

Tcecarenko [31]4 years ago

3 0

Answer with explanation:

A circle is rotated around a vertical line which we call Y axis.

When we rotate the circle around y axis, and join each circle ,we get a closed shape resembling with the Cylinder, having height equal to Diameter of circle.

We can't Calculate Radius of shape resembling with Cylinder.

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C. Divide 45 into three parts which are in A.P. Such that the pr oduct of last two is 300.

skelet666 [1.2K]

(a−b)+a+(a+b)=45

⟹3a=45

a=15

a(a+b)=300

⟹15(15+b)=300

⟹225+15b=300

⟹15b=300−225

⟹15b15=7515

b=5

a−b=10⟹a=15⟹a+b=20

The three numbers are 10, 15, and 20.

Proof:

10+15+20=45✓

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