The radius of a face-off circle on an NHL hockeyrink is 15 ft. What is its circumference?

Mathematics

2 answers:

Iteru [2.4K]2 years ago

7 0

Answer:

Step-by-step explanation:

r = 15 ft

Circumference = 2πr

=2*π*15

=30π ft

8090 [49]2 years ago

6 0

Answer:

94.2ft

Step-by-step explanation:

The formula for finding the circumstance is the diameter times pi.
We know the radius. To find the diameter, we double the radius, which would be 30. (2x15=30)
Next, we multiply 30 by pi. (30x3.14). The answer is 94.2.
Thus, the answer is 94.2ft.

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2 years ago

The volume of a box is given by V = 2x3-11x2 +10x +8. One side is (x - 4) and another side is (2x + 1).

user100 [1]

Answer:

The length of the third side is ( x - 2 )

Step-by-step explanation:

Volume of a box is the product of its length, width and height.

Volume of box = length × width × height.

One side is (x - 4) and another side is (2x + 1).

These given sides can be either length, height or width.

The volume of a box is given by V = 2x3-11x2 +10x +8. This means each of the sides are factors of the volume. To get the third side, we divide the volume by the product of the two given sides.

Product of the two given sides =

( x-4 ) (2x + 1) = 2x^2 + x - 8x + 4

= 2x^2 - 7x - 4

The long division is shown on the attached photo

The length of the third side is ( x - 2 )