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inessss [21]
3 years ago
8

A manufator makes two different sizes of spherical ball bEARINGS for use in motors. If the radius of the larger ball bearing is

twice the radius of the smaller one, then the volume of the larger ball bearing is how many times the volume of the smaller one? EXPLAIN!
A) 2
B) 4
C) 6
D) 8
Mathematics
2 answers:
Ede4ka [16]3 years ago
8 0

Answer:

D) 8

Step-by-step explanation:

V Large = 4/3 Pi (2r) Cube

V Small = 4/3 Pi (r) Cube

8 r Cube/ r Cube = 8

kotegsom [21]3 years ago
6 0

Answer:

Option D is the answer.

Step-by-step explanation:

Volume of sphere is given as:

\frac{4}{3}\pi r^{3}

Case 1:

Lets say the radius is 3 cm.

Volume = \frac{4}{3}\times3.14\times3\times3\times3

= 113.04 cubic cm

Case 2:

Lets say the radius is twice 3 cm that is 6 cm.

Volume = \frac{4}{3}\times3.14\times6\times6\times6

= 904.32 cubic cm.

The volume of the larger ball is \frac{904.32}{113.04} = 8 times the smaller one.

So, the answer is option D : 8 times.

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snow_lady [41]

Answer:

542 minutes

Step-by-step explanation:

currently our mean is =530

i got that by adding all the number out which equal too =2,650

and divide it by how many number there are which is 5

2,650/5=530

After some trial and error i found it

so you add 494+690+502+478+486+542=3,192

3,192/6=532

and that was our goal

so the 6th month she talked on the phone for 542 minutes

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3 years ago
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mars1129 [50]

30 is the value of x given of above quertion

4 0
3 years ago
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5 0
2 years ago
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8 0
3 years ago
2 factors of 36 add up to 15 What are they?
Margaret [11]

Hey there!!

What are the factors of 36?

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Which of these numbers add up to 15 ?

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The number are 15.

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