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Question
Shahin has purchased a square sheet of plywood of 169 square feet area. To cover a wall he must cut off two feet from a side. What is the area, in square feet, of the wall?
117
121
143
141
None of these
ANSWER : 3
Descrption
<p>Side of the plywood = √169 = 13 feet</p> <p>Cutting of 2 feet from a side will make it a rectangular sheet with a length of 13 feet and a width of 11 feet. Area of the wall is equal to the area of this sheet.</p> <p>So, the area of the wall = 13 x 11 = <strong>143 sq ft</strong></p>
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