I don’t see any multiple choice but d3 -343 is factored as (d-7)(d^2+7d+49)
the answer would have to be 7.8
4%
To find the percentage, first find the area of both circles. The area formula is

. After finding the area of the center of the target (19.625) and the area of the large target (490.625), set up a percent proportion to determine the percentage that the center takes up:


Cross multiplying and dividing by 490.625 will give a total of 4%.
Answer:
55600
Step-by-step explanation:
5.56*10^4