Answer:
i think its correct
i think someone else just had this same question tho so ill double check
Step-by-step explanation:
Answer:
The third one(-20+(n-1)*)
Step-by-step explanation:
It's correct because when you plug in one of the numbers in the list, it makes the equation equal. Example Below.
n=4
n=-20+(n-1)8
4=-20+(4-1)8
4=-20+3*8
4=-20+24
4=4
Area of a circle=πr²
area of this cirlce=π*(12 ft)²=144π ft²≈452.39 ft².
answer 1= the area of this circle is 452.39 ft².
Perimeter of a circle=2πr.
Perimeter of this cirlce=2π(12 ft)=24π ft≈75.4 ft
<span>answer 2= the perimeter of this cirlce is 75.4 ft.</span>
Answer:

Step-by-step explanation:
The rules of exponents say ...
![\displaystyle\sqrt[a]{b^c}=b^{\frac{c}{a}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%5Csqrt%5Ba%5D%7Bb%5Ec%7D%3Db%5E%7B%5Cfrac%7Bc%7D%7Ba%7D%7D)
Here, you have a=3, b=8, c=x, so the alternate form is ...

Answer:
Area of semicircular lawn is 9.82 square meter.
Step-by-step explanation:
Given:
Diameter of the semicircle = 5 m
So we will find the radius.
Radius is half of the diameter.
Radius 
We need to find the area of the lawn.
Solution:
Now we know that;
Area of semicircle is half times π times square of the radius.
framing in equation form we get;
Area of semicircular lawn = 
Hence Area of semicircular lawn is 9.82 square meter.