Answer:
Step-by-step explanation:
Area of a circle is equal to
, where r is the radius
![A=\pi r^2](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E2)
A diameter is twice the length of the radius. (
)
So the radius is 4 cm.
![r^2=4^2=16](https://tex.z-dn.net/?f=r%5E2%3D4%5E2%3D16)
so the Area is ![16\pi](https://tex.z-dn.net/?f=16%5Cpi)
Answer:
Scientific notation uses exponential notation. When a number is written in scientific notation, the exponent tells you if the term is a large or a small number. A positive exponent indicates a large number and a negative exponent indicates a small number that is between 0 and 1.
Step-by-step explanation:
In order to rewrite an expression in radical form using exponents, we must consider the power of the root (is the radical the typical square root, cubed root, etc) and the value of any exponents contained in the radical.
Using this information, we will make the power of the radical the denominator of our exponent, and whatever exponent is contained in the radical will become the numerator.
Example:√(x³) = square root of x³ = x^(3/2)
Hopefully this is what you need!
Answer: I think it might be 3.5 hours
Step-by-step explanation: 4 - 1.5 = 3.5
I'm not 100% sure but hope this helps!