Question

Solve them with proper written steps .. please.

Answer 1

Answer:

these are the steps and formula put the value and find it

Step-by-step explanation:

1). S=4

S×S

2). A=πr^2 - S×S

r=5 S=10

3) A= πr1^2 - πr2^2

r1 = 5 r2=2.5

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