Hunterryoshi15
Hunterryoshi15 Hunterryoshi15
  • 13-07-2020
  • Mathematics
contestada

Find the length of a side of a square whose diago- nal is 16 cm long. Round your answer to the nearest tenth.

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marcthemathtutor
marcthemathtutor marcthemathtutor
  • 13-07-2020

Answer:

11.3 cm

Step-by-step explanation:

(see attached for reference)

using the Pythagorean theorem

hypotenuse ² = length ² + length ²

16² = L² + L²

16² = 2L²   (express 2 = (√2)²

16² = (√2)²L²  

16² = (√2L)²  

16 = √2L

L = 16 /√2

L = 11.3 cm

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dzharvey00
dzharvey00 dzharvey00
  • 13-07-2020

11.3

use Pythagoras theorem give each side is "a"

a^2+a^2=16^2

2*a^2=256

a^2=256/2=128

a=sqrt(128)=11.3 sqrt=square root

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