Each circle has center o. the radius of the smaller circle is 2 and the radius of the larger circle is 6. if a point is selected at random from the larger circular region, what is the probability that the point will lie in the shaded region

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!