Question

Click the picture.
Don't need to answer only do what is written and I will also do what I have to do.​

Answer 1

okay

__________

Again,

area of red region

= π [ (r of red)² - (r of gold)² ]

= π [ {2(10.5 cm)}² - {1(10.5 cm)}² ]

= π [ 4(10.5 cm)² - (10.5 cm)² ]

= π [ 3(10.5 cm)² ]

= [(22/7) × 3 × 10.5 × 10.5] cm²

= [346.5 × 3] cm²

= 1039.5 cm²

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