we know 1.9375 is the 100%, what is 3.8 off of it in percentage?

let's notice that 3.8 is about twice as much as 1.9375.
Radius of larger circle = 32
Area of larger circle:
= π • r²
= 3.14 • 32²
= 3.14 • 1024
= 3,215.36
Answer : 3,215.36 in²
Answer:
- 36.00%
- 99.9976%
Step-by-step explanation:
Two mutually exclusive events that cover all possible events have a combined probability of 1.
1. If there is no middle ground—you either pass math or you don't—then the probability of not passing math this semester is 100% - 64% = 36%.
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2. If there is no middle ground—you either win the lottery or you don't—then the probability of not winning the lottery is 100% - 0.0024% = 99.9976%.

Why?
We have the isosceles right triangle. The length of legs are 6. Use the Pythagorean theorem:

In general, the formula for calculating the hypotenuse in an isosceles right triangle is 
a - a leg, h - a hypotenuse