And now let's see twelve is the same thing as four times three, so this is, this is equal to four times twenty-eight, four times twenty-eight minus three, so that's four times twenty-five over three, which is equal to one hundred over three, that's h squared, so this h is going to be equal to the square root of this, which is ten over the square root of three.
ทีนี้ลองดู 12 ก็เหมือนกับ 4 คูณ 3, งั้นนี่, นี่จะเท่ากับ 4 คูณ 28, 4 คูณ 28 ลบ 3