2 years ago

Find the value of 5^-3 x 2^-1

Mathematics

1 answer:

xenn [34]2 years ago

4 0

Answer:

Step-by-step explanation:

5^-3 = 1/(5*5*5) = 1/125

2^-1 = 1/2

1/125 * 1/2 = 1/250

That could be the answer

So could 0.004

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3 years ago

Find the surface area of a sphere with a volume of 36π in3.

swat32

First use known volume to solve for radius:
$V=\frac{4}{3}\pi r^{3}$
$r=\sqrt[3]{\frac{3V}{4\pi}}$
$r=\sqrt[3]{\frac{3(36\pi)}{4\pi}}$
$r=\sqrt[3]{27}$
$r=3$

Then use the radius to get the surface area:
$A_{surf}=4 \pi r^{2}$
$A_{surf}=4 \pi 3^{2}$
$A_{surf}=4 \pi 9$
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