Answer:
The correct answer is last option 78.5%
Step-by-step explanation:
Points to remember
Area of circle = πr²
Where r is the radius of circle
Area of square = a²
Where 'a' is the side length of square
To find the area of circle
Here r = 10 cinches
Area = πr²
= 3.14 * 10²
= 3.14 * 100 = 314
To find the area of square
Here a = 20 inches
Area = a²
= 20²
= 400
To find the probability percentage
Probability = area of circle/Area of square
= (314/400)*100
78.5 %
