Determine which value is a solution to the open sentence. 3 + 6x = 21
1 answer:
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The perimeter of the square is: ft
Step-by-step explanation:
The picture is attached with the answer.
the diagonal of a square divides it into two right angled-triangles.
We can use one of the triangle to find the length of side as the diagonal will be the hypotenuse of the triangle
Let a be the side of the square, then according to Pythagoras theorem
Dividing both sides by 2
Taking Square root on both sides
Now,
Hence,
The perimeter of the square is: ft
Keywords: Perimeter, Pythagoras Theorem
Learn more about Square at:
#learnwithBrainly
if you don't have a Unit Circle, this is a good time to get one, you can find many online.
Check the picture below.
