2 cm
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Its radius is: 4/2 = 2 cm
Area circle = π × radius² Area smaller circle = π × (4 cm)² = 16π cm² Area larger circle = π × (10cm)² = 100π cm² → probability inside smaller circle = area_smaller_circle/area_larger_circle = 16π cm²/100π cm² = 16/100 = (4×4)/(4×25) = 4/25.
A circle with a radius of 4 cm has an area of 50.27 square cm.
2 cm
A=Pi(r)2 - A circle with a radius of 4 cm has an area of 50.27 square cm