Geometry Puzzle – Challenge 73
Time for another great math challenge for those who enjoy solving mathematics and critical thinking challenges.
Challenge:
The perimeter of a square is 13 cm and the perimeter of an equilateral triangle is 7 cm. What is the difference of a side of the square and a side of a triangle?
A- 713 cm
B- 1112 cm
C- 114 cm
D- 214 cm
E- 137 cm
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The correct answer is B.
The perimeter of a square is 13cm. Therefore, one side of the square is 134 cm.
The perimeter of the equilateral triangle is 7cm. Therefore, one side of the triangle is 73 cm.
The difference of a side of the square and a side of a triangle is:
\frac{13}{4} – \frac{7}{3} = \frac{39-28}{12} = \frac{11}{12} cmThe Best Books to Ace Algebra
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