You use the Pythagorean theorem. Remember that Asq + Bsq = Csquared, where A and B are the sides of a right triangle and C is the diagonal. (Remember that a right triangle is just a square cut in half slantwise.) Based on the theorem, you know that the sum of A squared and B squared equals 20 squared (20 squared = 20 x 20 or 400.) Also, since it's a square you concerned with, you know that the sides are the same length. So whatever length "A" side is, "B" side is the same. So we might as well say two times A is the same as A plus B. So two times A squared equals 400. We only want to know what ONE side of the square measures, so we can reduce both sides of the equation by dividing each side by 2. In other words, if TWO times A squared equals 400, then ONE times A squared equals 200. But we don't want to know what the length of A squared is, we want to know what the length of A is. So take the square root. A equals the square root of 200. The square root of 200 is fourteen plus a fraction. So your square is fourteen plus a fraction on each side. Check your work: 14 squared plus 14 squared = 196 + 196 = 392, which is is very close to the C squared we started with of 400. The square root of 400 is 20, and you are back to the beginning.
The square root of four twenty-fifths, is two fifths, because of the fact that the square root of four is two and the square root of twenty-five is five.
9.44881889 or 9.45 to 2 dp.
Let Mindy be x:- So: 2x-20 = 66 Then: 2x = 66+20 => 2x = 86 and so x = 43 Therefore Mindy is 43 inches tall
The least common multiple of four, twenty eight, and twenty is 140.
Thirty-two. Twenty plus twelve is thirty-two.
36 inches. If the perimeter is 24 inches then the side is 24/4 = 6 inches. The area is side length x side length = 6 x 6 = 36 inches.
5.55 square feet.
If the area of a circle is about 28 square inches the diameter is: about six inches (5.971).
1000
24 yards = 72 feet. (there are 3 feet in 1 yard).
By Pythagoras, the other side is 24 inches long. So the perimeter is 2*(10+24) = 2*34 = 68 inches.
between twelve and twenty four inches long depending on personal preference the average length was eighteen inches.
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The perimeter of a square is the sum of all its sides. In this case, if the perimeter is twenty centimeters, each side of the square would be five centimeters long.
That would be 3 x 9 inches.
Linear means length, square means area. You are trying to compare the incomparable.