Malia measured the button on her jacket. then she calculated that it has a circumference of 25.12 millimeters. what is the button's area?

78.9

Step-by-step explanation:

Multiply by pi (3.14). 25.12 times 3.14 equals 78.9.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.