Question 945684
If {{{ L }}} = length and
{{{ W }}} = width
Find perimeter, {{{ P }}}
The formula is:
{{{ P - 2L + 2W }}}
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{{{ P = 264 }}} in
(1) {{{ 264 = 2L + 2W }}} in
and
(2) {{{ L = W + 96 }}}
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(1) {{{ 132 = L + W }}}
Substitute (2) into (1)
(1) {{{ 132 = W + 96 + W }}}
(1) {{{ 2W = 36 }}}
(1) {{{ W = 18 }}}
and, since
(2) {{{ L = W + 96 }}}
(2) {{{ L = 18 + 96 }}}
(2) {{{ L = 114 }}}
The width is 18 in
The length is 114 in
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check:
(1) {{{ 264 = 2L + 2W }}} 
(1) {{{ 264 = 2*114 + 2*18 }}} 
(1) {{{ 264 = 228 + 36 }}}
(1) {{{ 264 = 264 }}}
OK