Respuesta :

hgebrkedan

Answer:

51 cm

Step-by-step explanation:

I think that because the

Just ans of 1 part cause I am lazy ~_~

Part 1 :

  • Area of square = 21²
  • Area of square = 441 cm²

  • Area of semicircle = (pi × r²)/2
  • Area of semicircle = (22× 21²)/(2 × 7)
  • Area of semicircle = (11 × 21 × 21)/7
  • Area of semicircle = (11 × 3 × 21)
  • Area of semicircle = 693 cm²

Area of whole figure:-

  • 441 + 4 × 693
  • 3,213 cm²

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