Length of the side = 9 cm
Diagonal = 
cm
Solution:
Area of the square = 81 square centimeters
In square all sides are equal.
Area of the square = side × side
Side × side = 81
Side² = 9² (∵81 = 9²)
Taking square root on both sides, we get
Side = 9 cm
Length of the side = 9 cm
To find the length of the diagonal:
In square all the angles are right angle.
Diagonal splits the square into two right angle triangle.
Using Pythagoras theorem,
<em>In right triangle, square of the hypotenuse is equal to the sum of the square of the other two sides.</em>
Here, diagonal is the hypotenuse.
Taking square root on both side,
Diagonal = cm
Answer:
x= 50
Incredibly odd diagram, but interior polygon angles of 4 sides must be 360 in total. 180-130=50.
Step-by-step explanation:
these are the answers of your questions
We have cos( x - y ) = cosxcoy + sinxsiny <=> cos ( π - x ) = cosπcosx + sinπsinx <=> cos ( π - x ) = (-1)cosx + 0sinx = -cosx;
Scientific notation is of the form a 
Number written by Jim = 543000000000000
To find a, take the number and move a decimal place to the right one position.
Number given = 543000000000000
New number = 5.43000000000000
So decimal will be after 5.
Now to find b, count the number of decimals shifted from right to left.
b= 14
So scientific number of 543000000000000 = 
So option A is the answer
