Respuesta :

Answer:

9.2 cm and 15% increase

Step-by-step explanation:

1.15*8 = 9.2

percentage increase

new square = 9.2*9.2 =84.64

old area=8*9.2 = 73.6

percentange increase = (84.64-73.6)/73.6 = 15%

Increase the width

  • 8+0.15(8)
  • 8+1.2
  • 9.2cm

As sides of square are equal

  • The sides are 9.2cm

Area increases same as length i.e 15%

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