Integer 7814

The small circle in the picture has an area of 3.5 cm2. It touches from the inside and passes through the center of the large circle. What is the area of a large circle? The result round to an integer.

Correct answer:

S2 =  14 cm2

Step-by-step explanation:

S1=3.5 cm2 S1 = π r12  r1=S1/π=3.5/3.14161.0555 cm  r2=2 r1=2 1.05552.111 cm  S2=π r22=3.1416 2.1112=14 cm2



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