3 years ago

Help me please and thank you

Mathematics

1 answer:

NeTakaya3 years ago

5 0

Answer:

use formula

area =1/4*π*d^2

81π=1/4*π*d^2(here two pie gets cancel)

81=1/4*d^2

81*4=d^2

$\sqrt{324}$ =d

18=d

Step-by-step explanation:

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