bella28994 bella28994
  • 22-08-2020
  • Mathematics
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find the surface area of composite figures

find the surface area of composite figures class=

Respuesta :

Аноним Аноним
  • 22-08-2020

  • Answer:

429 cm²

  • Step-by-step explanation:

A(blue) =

= 2×6cm×10cm + 2×6cm×8cm + 8cm×10cm + (8cm×10cm - 5cm×4cm)

= 120cm² + 96cm² + 80cm² + 60cm²

= 356 cm²

A(green) =

= 4cm×5cm + 2×5cm×5cm/2 + 4cm×7cm

= 20cm² + 25cm² + 28cm²

= 73 cm²

A(total) =

= A(blue) + A(green)

= 356 cm² + 73 cm²

= 429 cm²

Answer Link
jayyneedshelp jayyneedshelp
  • 18-09-2020
The answer is 429 cm^2
Answer Link

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