Question

What is the perimeter of quadrilateral whosee four sides are 2 1/2 cm 3 1/6 cm 2 3/4cm 4 5/12

Answer 1

Add the four sides.
$5 \div 2 + 19 \div 6 + 11 \div 4 + 53 \div 12 = \\ (30 + 38 + 33 + 53) \div 12 = \\ (68 + 86) \div 12 = \\ 154 \div 12 = \\ 12.8$