It is helpful to become familiar with the rules for secants of a circle.
The product of the numbers on the same chord is the same.
.. 2*x = 5*8
.. x = 20
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The picture is not drawn to scale. (They almost never are.)
Ggggggggggggggggggggggggggg
Cause you have the slashes and 2/4/5/6/7and 3/4/5/6/7
Answer is 160
explanation: add all of them up and divid by how many numbers are in the data set
74+81+77+88=320
then divid 320 by 4 =160
