ďfrrdrrtf5c9 ďfrrdrrtf5c9
  • 24-03-2017
  • Mathematics
contestada

What is the side length of a square with an area of 225 cm2 ? use an appropriate technique to solve .

a) 112.5 cm
b) 15 cm
c) 56.25 cm
d) 45 cm

Respuesta :

rainwatertheo
rainwatertheo rainwatertheo
  • 24-03-2017
It's B. the sides of a square have to be equal, so you can check by squaring any of the options and seeing which ones equal 225. 15 is the square root of 225. this can be expressed as 15=sqrt225
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