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Two circles of radius 9 cm and 8 cm touch externally. Find the distance between their centres?1). 17 cm2). 2 cm3). 9 cm4). 15 cm |
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Answer» Given : Radius of 1st circle, R1 = 9 cm Radius of 2nd circle, R2 =8cm According to the LAW of betweeness Distance between the CENTRES of the two circle = Sum of the radii of the two circles. So,Distance between the centres of the two circle = R1 + R2 = 9 + 8 = 17 cm Distance between the centres of the two circle = 17cm |
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