Question 926980
given:
(1) {{{ 690 = 7L + 4W }}}
(2) {{{ 228 = 2L + 2W }}} ( formula for perimeter )
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(2) {{{ 114 = L + W }}}
Multiply both sides of (2) by {{{ 4 }}} and
subtract (2) from (1)
(1) {{{ 7L + 4W = 690 }}}
(2) {{{ -4L - 4W = -456 }}}
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{{{ 3L = 234 }}}
{{{ L = 78 }}}
and
(2) {{{ L + W = 114 }}}
(2) {{{ W = 114 - 78 }}}
(2) {{{ W = 36 }}}
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The court is 36' x 78'