The lengths of the rectangle have been measured to the
nearest tenth of a centimetre.
Work out the following, writing down all the figures on your calculator display:
a) The upper bound for the area of the rectangle.
b) The lower bound for the perimeter of the rectangle.
87.3 cm -length
51.8 cm- width

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.