3 years ago

What is the radius of the circle

Mathematics

2 answers:

vesna_86 [32]3 years ago

4 0

Answer:

2 units

Step-by-step explanation:

The radius of the circle is 2 units because you can find the radius by multiplying the diameter by 2. The radius is half of the diameter.

4 divided by 2 is 2.

Hope this helped :)

Strike441 [17]3 years ago

3 0

Answer:

Step-by-step explanation:

The radius is always half of the diameter. Half of 4 is 2.

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Phoenix [80]

Answer

a. The volume is multiplied by 4

b. The volume is doubled

Explanation

a. The volume of a cone with radius r and height h is $\pi r^2 h/3$ . If the radius is doubled, the new volume will be $\pi (2r)^2h/3$ , which is equal to $4\pi r^2h/3$ . This means that the volume is multiplied by 4.

b. The volume of a cone with radius r and height h is $\pi r^2 h/3$ . If the height is doubled, the new volume will be $\pi r^2(2h)/3$ , which is equal to $2\pi r^2 h/3$ . This means that the volume is multiplied by 2.