Answer:
E. 400
Step-by-step explanation:
So this is how we set this up, and how we solve

Hope this helps!
So you are solving for circumference of a quarter circle: 
r= 28

Answer: the line across the circle is the diameter, you find diameter by multpyling radius by two
Step-by-step explanation:
Answer:
the answer is c
Step-by-step explanation:
you find what percent 56 is of 350
Answer:
sorry I don't know the answer of this
To solve this problem, we can make a proportion.
Since Kiara's money has a ratio of 9:7 in comparison to Tyler's, we can make the proportion as follows:
9/7=126/x, where x is Tyler's money. This can be simplified to 9=882/x, or 9x=882. Then, divide by 9 to find x, which results in x=98.
Now we know that Tyler has $98, so we just need to add 126 to 98 and get $224 all together.
Hope this helps!