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3 years ago

Answer the following questions... PLEASE

Mathematics

1 answer:

Oksana_A [137]3 years ago

7 0

Answer:

1)461,58sm²

2)53,38sm²

Step-by-step explanation:

p=3,14

1) r=14sm

p×r²=14²×3,14=615,44

S1=615,44

r=7sm

p×r²=7²×3,14=153,86

S2=153,86

The painted surface of the circle:

S1-S2=615,44-153,86=

461,58

2) r=9sm

p×r²=9²×3,14=254,34

S1=254,34

r=8sm

p×r²=8²×3,14=200,96

S2=200,96

The painted surface of the circle:

S1-S2=254,34-200,96=53,38

Answer:

1)461,58sm²

2)53,38sm²

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