Answer:
72 cm²
Step-by-step explanation:
The diagonal of the square divides the square into 2 right triangles.
let the legs of the triangle be x , then using Pythagoras' identity.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
The hypotenuse of the triangle is the diagonal, thus
x² + x² = 12²
2x² = 144 ( divide both sides by 2 )
x² = 72 ( take the square root of both sides )
x = 
The area of the square = x² = ( )² = 72 cm²
P= 32cm
Don't forget to mark this as brainliest :)
Remark
You can use a method called unit analysis to solve this problem. You will use it many times in your education later on.
Solve
Now sort out the numbers in the numerator and those in the denominator and multiply them together.
<em><u>Numerator</u></em> 28 * 5280 * 1 * 1 = 147840
<em><u>Denominator:</u></em> 60 * 60 = 3600
Now divide the numerator by denominator
Answer = 147840 / 3600 = 41.1 Feet / second
28 miles per hour = 41.1 feet / second
Hi,
Here is the equation.
Each person would get 4.28 marbles.
Hope this helps.
r3t40
The absolute value is always positive, so the answer is 2.3
