Answer:
4 times 4 = 16+12=28
Step-by-step explanation:
4x - 12 = 28
To isolate 4x, we add 12 to both sides:
4x - 12 + 12 = 28 + 12
so
4x = 40
Now we divide 4 from both sides:
x = 40 / 4
so x = 10
your answer is 75.4
the circumference is 30 cm,
Hope it helps