2 years ago

21 cm by 18cm by 15 cm what will the total sq cm

Mathematics

1 answer:

CaHeK987 [17]2 years ago

8 0

Answer:

5670 $cm^{3}$ will be your answer!

Step-by-step explanation:

21 x 18 x 15 = 5670

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The answer is: The diameter is 4 centimeters.

The explanation is shown below:

1. The volume of the cylinder is:

$Vc=r^{2}h \pi$

Where $r$ is the radius ( $r=\frac{16cm}{2}=8cm$ ) and $h$ is the height ( $h=2cm$ ).

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$Vc=(8cm)^{2}}(2cm)\pi\\Vc=128\pi$

2. The total volume of the 12 spheres is:

$Vs=12(\frac{4}{3}r^{3}\pi)\\Vs=16r^{3}\pi$

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$Vc=Vs\\128\pi=16r^{3}\pi$

4. Now, you must solve for the radius:

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3 years ago

NEED HELP PLEASE BEGGING PLEASE!!!!

Sliva [168]

Answer:

-54

Step-by-step explanation:

$8(-9) - 6(-3)\\$

Multiply 8 by -9 and 6 by -3

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Subtract $Value = -54$

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