Answer:
The radius of the cone is 
Step-by-step explanation:
we know that
The volume of a cone is equal to

In this problem we have


substitute in the formula and solve for r

Simplify

square root both sides

To solve this, you need to know three exponent rules:1) Power of a productBasically says

. This means a product raised to a power is the same as taking each factor to that power and multiplying them.
For example:
2) Product of powersBasically says

. When two expressions with the same base (a) are multiplied, you can add their exponents while keeping the same base.
For example:
3) Power of a powerBasically says

. When an exponent is being raised to a exponent, you can multiply the exponents.
For example:

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Back to your problem:
You are asked to simplify

, Tackle it by simplifying both factors and then multiplying them together and simplifying again.
1) First use the power of a product rule to change

into

. Simplify it into

using the power of a power rule.
2) Simplify

into

using the power of a power rule.
3) Multiply the simplified factors from part one and two and simplify using the product of powers rule:

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Answer:
Answer:
Step-by-step explanation:
The answer is A for both
Answer:
129
Step-by-step explanation:
the 2 angles together will equal 180 because that is half of a circle a circle is 360so what you do is subtract 180 minus 51 and get 129