BRAINLIEST TO RIGHT ANSWER

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

6 0

Answer:

It is A

Step-by-step explanation:

Because of the fact that the volume of it is going to be 21 cm

and 11,144 cm^3 divided by the sub coordinate is 34

then you subtract that and get 13 as your answer

Helen [10]3 years ago

3 0

Answer:

The radius of the cylinder is equal to $r=13\ cm$

Step-by-step explanation:

we know that

The volume of a cylinder is equal to

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

In this problem we have

$V=11,144\ cm^{3}$

$h=21\ cm$

Substitute in the formula and solve for r

$11,144=\pi r^{2} (21)$

$r=\sqrt{\frac{11,144}{21\pi}}\\ \\r=13\ cm$

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What is the value of 3 to the power 2 over 3 to the power 4? A. 1 over 81 B. 1 over 27 C. 1 over 9 D. 1 over 3

rodikova [14]

One way you could solve this is to just multiply the top and bottom out so that you get 9/81, reducing it by 9/9 to get 1/9 or option C.
Another way would be to do $3^{(2-4)}$ since dividing numbers with exponents would be subtracting the bottom exponent from the top exponent, provided that the base number (in this case 3) is the same for both. For this method, you would get $3^{-2}$ , which is equal to 1/9 or .1 repeating, the same answer that you'd get with the first method.