Answer:
6.28km
Step-by-step explanation:
Hey,
We know that the circumfrence is the perimetert of a full circle. If we want to find the perimeter of a semicircle all we have to do is find the circumfrence and then divide it by 2 since we want to know the perimeter of half the circle.
Circumfrence is equal to 2πr. Where r is the radius and since we know the radius we an solve for the circumfrence.
2(π)(1km)=2kmπ.
The problem tells us to use 3.14 for pi so let's multiply 2 by 3.14.
6.28km is the answer!
A=1/2ab
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2
15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as
45/4=b
Answer: X intercept= (-3,0) Y intercept= (0,4)
Step-by-step explanation:
I would say the answer is true, if it’s not I apologize
First you must know that what’s outside of the square root is called the coefficient, and it’s the little number outside of the box area.
Next, the number inside the square root or box is called the radicand.
To add radicals you must add coefficients to coefficients, and radicands to radicands.
In your problem the three, which is the radicand, is added to the other 3, which is also the other radicand.
The two outside, which is the coefficient is left outside. The reason the answer has a three outside is that any radical without a number outside is assumed to have the coefficient of one automatically.
One important rule to always remember when adding radicals is that the radicand must be the same number to the other radicand to be added.
I know it can be a bit confusing, but I hope this helped a little.
