Subtract -2x^2 + 3x - 9 from 8x^2 +10x - 10
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Circumference = 2πr = 27 cm
= 2 × 3.14 × r = 27
= 3.14 × r = 27/2
so, r = ×
= 4.2 cm
Circumference = 2πr = 27 cm
= 2 × 3.14 × r = 27
= 3.14 × r = 27/2
so, r = ×
= 4.2 cm