document.write( "Question 277305: I need help with this problem. The inner rectangle whose length is 7 inches and width is 13 inches is surrounded by a rectanglar frame whose uniform thickness is 2.5 inches. Find the area. \n" ); document.write( "

Algebra.Com's Answer #201939 by oberobic(2304) $\"\"$ $\"About$

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Given the uniform width of the border is 2.5 inches, then you will need to add 5 inches to the inner rectangle's length and width to determine the outer rectangle's area:
\n" ); document.write( "l + 5 = 7 + 5 = 12
\n" ); document.write( "w + 5 = 13 + 5 = 18
\n" ); document.write( "So, the outer rectangle's area = l*w = 12*18 = 216
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\n" ); document.write( "The inner rectangle's are = 7 * 13 = 91
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\n" ); document.write( "That means the area of the 'border' = 216 - 91 = 125
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\n" ); document.write( "Done \n" ); document.write( "

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