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lukranit [14]
3 years ago
7

Can you help me work this out please?

Mathematics
2 answers:
Readme [11.4K]3 years ago
5 0

Step-by-step explanation:

Always start by writing what you know

Area of a circle

A= 3.142 x r^2

r = 21cm

Nina [5.8K]3 years ago
5 0
Area of a triangle is a=3.14(r)^2
21 is the radius so plug that in for r and solve
hope this helps!!
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Hey there!

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