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Two circles of radii 8 cm and 6 cm touch each other externally. The length of the direct common tangent is: |
13.86 20 10.12 24 |
13.86 |
Length of direct common tangent = \(\sqrt {d² - ( R - r )² }\) = \(\sqrt {14² - ( 8 - 6 )² }\) = \(\sqrt {196 - 4 }\) = \(\sqrt {192 }\) = 13.86 cm |
