Question 961648
The extra dimension added to both the length
and the width is {{{ 2*4 = 8 }}} ft
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(a)
The dimensions of pool + walkway is:
( 30 + 8 ) x ( 14 + 8 ) = 38 x 22
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(b)
The diagonal is:
{{{ d = sqrt( 38^2 + 22^2 ) }}}
{{{ d = sqrt( 1444 + 484 ) }}}
{{{ d = sqrt( 1928 ) }}}