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Sagot :

Answer:

1) A = 112 cm²

2) A = 130.24 cm²

3) A = 96 cm²

Step-by-step explanation:

Rectangle Formula: Length x Width

Triangle Formula: Base x Height ÷ 2

Circle Formula: π r²

1) Rectangle Area:

A = 12 x 8

A = 96

Triange Area:

A = 8 x 4 ( ÷ 2 )

A = 32 ÷ 2

A = 16

96 + 16 = 112 cm²

2) Circle Area:

A = (3.14) 4 x 4

A = 3.14 x 16

A = 50.24

Rectangle Area:

A = 8 x 10

A = 80

50.24 + 80 = 130.24 cm²

3) Rectangle Area:

A = 8 x 10

A = 80

Triangle Area:

A = 8 x 4 (÷ 2)

A = 32 ÷ 2

A = 16

80 + 16 = 96 cm²