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Andru [333]
4 years ago
9

Can someone please help me and explain? please

Mathematics
1 answer:
mariarad [96]4 years ago
4 0
Composite figure is made up of 4 triangles and a square.

Area of Square = Length x Length 
Area of Square = 12 x 12
Area of Square= 144 cm²

Area of triangle = 1/2 x base x height
Area of triangle  = 1/2 x 12 x 8 
Area of triangle  = 48 cm²

Area of 4 Triangles = 48 x 4
Area of 4 Triangles = 192 cm²

Total Area = 144 + 192 = 336 cm² 

\Longrightarrow \boxed { \boxed { Answer : 336 cm^{2} }}


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Answer:

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Step-by-step explanation:

Given that:

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To test the hypothesis :

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Alternative hypothesis :

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