Square diagonal

Calculate the length of diagonal of the square with side a = 11 cm.


Correct answer:

d =  15.56 cm

Step-by-step explanation:

a=11 cm  d2=a2+a2 d2=2 a2  d=2 a=2 11=11 2=15.56 cm



Did you find an error or inaccuracy? Feel free to write us. Thank you!



Showing 2 comments:
#
Math student
Why do you need to do
d squared = a squared + a squared

#
Dr Math
just  simple Pythagorean therorem

avatar







Tips to related online calculators
Pythagorean theorem is the base for the right triangle calculator.
See also our trigonometric triangle calculator.

 
We encourage you to watch this tutorial video on this math problem: video1   video2

Related math problems and questions:

  • Square diagonal
    square_d Calculate the length of the square diagonal if the perimeter is 172 cm.
  • ABCD square
    s1 In the ABCD square, the X point lies on the diagonal AC. The length of the XC is three times the length of the AX segment. Point S is the center of the AB side. The length of the AB side is 1 cm. What is the length of the XS segment?
  • Diagonals
    koso_uhlopricky Given a rhombus ABCD with a diagonalsl length of 8 cm and 12 cm. Calculate the side length and content of the rhombus.
  • Diagonal
    trapezium_right The rectangular ABCD trapeze, whose AD arm is perpendicular to the AB and CD bases, has an area of 15 cm square. Bases have lengths AB = 6cm, CD = 4cm. Calculate the length of the AC diagonal.
  • Diagonal of square
    ctverec_mo Calculate the side of a square when its diagonal is 10 cm.
  • A square
    rhombus3 A square with a length of diagonals 12cm give: a) Calculate the area of a square b) rhombus with the same area as the square, has one diagonal with a length of 16 cm. Calculate the length of the other diagonal.
  • Calculate
    cubes3 Calculate the length of the wall diagonal of the cube with an edge 5 cm long.
  • Calculate
    equilateral_triangle2 Calculate the length of a side of the equilateral triangle with an area of 50cm2.
  • Find the
    described_circle Find the length of the side of the square ABCD, which is described by a circle k with a radius of 10 cm.
  • Squares above sides
    pataVysky Two squares are constructed on two sides of the ABC triangle. The square area above the BC side is 25 cm2. The height vc to the side AB is 3 cm long. The heel P of height vc divides the AB side in a 2: 1 ratio. The AC side is longer than the BC side. Calc
  • Diamond diagonals
    kosostvorec Calculate the diamonds' diagonals lengths if the diamond area is 156 cm square, and the side length is 13 cm.
  • Triangle in a square
    stvorec In a square ABCD with side a = 6 cm, point E is the center of side AB, and point F is the center of side BC. Calculate the size of all angles of the triangle DEF and the lengths of its sides.
  • Rectangle diagonal
    rectnagles The rectangle, one side of which is 5 cm long, is divided by a 13 cm diagonal into two triangles. Calculate the area of one of these triangles in cm2.
  • Two diagonals
    rhombus-diagonals The rhombus has a side length of 12 cm and a length of one diagonal of 21 cm. What is the length of the second diagonal?
  • Diagonal - simple
    makac Calculate the length of the diagonal of a rectangle with dimensions 5 cm and 12 cm.
  • Side and diagonal
    rectangle Find the circumference and the area of the rectangle if given: side a = 8 cm diagonal u = 10 cm.
  • IS trapezoid
    trapezoid_ABCD Calculate the length of diagonal u and height v of isosceles trapezoid ABCD, whose bases have lengths a = |AB| = 37 cm, c = |CD| = 29 cm and legs b = d = |BC| = |AD| = 28 cm.