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IrinaK [193]
3 years ago
11

SOMEONE HELP, I HAVENT BEEN PAYING ATTENTION TO CLASS

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
6 0

Answer:

A=4cm

ok to do this we do the formula

A=PiR^2

A=3.14*4^2

A=3.14*16

A=50.24

and the area of circle B is 4 times the area of a so

50.24*4=200.96

200.96=3.14*X^2

Since  r  is on the right side of the equation, switch the sides so it is on the left side of the equation. 3.14 ⋅ r 2 = 200.96  Divide each term by  3.14  and simplify.

r 2 = 64

r=8

CIRLCE A=50.24

CIRLCE B=8

andrew11 [14]3 years ago
3 0
Uhhh yeah me neither!! 3.14 yes!!! it’s pie
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