Find the equation of the circle with radius 5, whose centre lies
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    14. Find the equation of the circle with radius 5, whose centre lies on x-axis and passing through the point (2, 3).




    The centre of the circle lies on x-axis.
    rightwards double arrow  Its co-ordinates can be supposed as (h, 0)
    The circle passes through point A (2, 3) and has a radius 5.

    rightwards double arrow                             CA = 5 <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array) #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493) #2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs() #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...') #4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array) #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #6 {main}</pre>
    rightwards double arrow       straight h squared minus 4 straight h minus 12 equals 0 space space rightwards double arrow space left parenthesis straight h minus 6 right parenthesis space left parenthesis straight h plus 2 right parenthesis space equals space 0 space rightwards double arrow space straight h space equals space 6 space space or space straight h space equals space minus 2
    When h = 6, the centre of circle is left parenthesis straight h comma space 0 right parenthesis space left right arrow space left parenthesis 6 comma space 0 right parenthesis comma space radius of circle = 5

    ∴  The equation of circle is: left parenthesis straight x minus 6 right parenthesis squared plus left parenthesis straight y minus 0 right parenthesis squared space equals space 5 squared
    or   straight x squared plus straight y squared minus 12 straight x plus 36 minus 25 equals 0 space space or space space straight x squared plus straight y squared minus 12 straight x plus 11 equals 0
    When h = -2, the centre of circle is (-2, 0) and the radius is 5
    ∴ the equation of circle is: space space left parenthesis straight x minus straight h right parenthesis squared plus left parenthesis straight y minus straight k right parenthesis squared space equals space straight r squared
    or        <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array) #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493) #2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs() #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...') #4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array) #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #6 {main}</pre>
    or          straight x squared plus straight y squared plus 4 straight x plus 4 equals 25 space space or space straight x squared plus straight y squared plus 4 straight x minus 21 equals 0
    Hence, the equation of circle is: straight x squared plus straight y squared minus 12 straight x plus 11 equals 0 space or space straight x squared plus straight y squared plus 4 straight x minus 21 equals 0
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