A circular mirror has a diameter of 12 inches. Part A
What is the area, in square inches, of the mirror? Explain your reasoning with words, pictures, and numbers.

Part B
A circular frame that is 3 inches wide surrounds the mirror.
What is the combined area, in square inches, of the circular mirror and the frame? Explain your reasoning with words, pictures and numbers.

853.3

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

i suppose it should be (y=2x-5)

step-by-step explanation:

none of the above chief keef