The diagonals of a rhombus are 3.5 and 12, a circle tangents two sides (or their extensions) of the rhombus and the center is on the one of the vertices of the rhombus. Find the exact value of the circle area. (Make a drawing for all cases)

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

addition

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation:

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract