Answer:360/90 = 4
Total area = 4 times that of the sector.
Step-by-step explanation:
A 90 deg sector has 1/4 the area of the circle.
Total circle area = 4*9pi = 36pi
The formula is 
What are series?
In mathematics, we can describe a series as adding infinitely many numbers or quantities to a given starting number or amount.
We will find the formula as shown as below:
Let 
We know 



.
.

On adding










Hence, the formula is 
Learn more about Series here:
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Answer:its 5/2 <100
Step-by-step explanation:
Answer:
yes 18 24 and 30 does form a right triangle
1. The number 7 is located in the hundred thousands place
2. Since the number 1 is located in the ten thousands place, it's telling 7 to stay the same
Stays the Same: 1,2,3,4
Goes Up: 5,6,7,8, etc...
712,350 ⇒ 700,000