On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º. What is the measure of the thi
rd angle?
1 answer:
There is 180 degrees in a triangle so it is 80 degrees
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First find the area of the rectangle, then remove the circular area.
AB * AJ = 8 * 18 = 144 sq cm
Circle =

=

=3.14 * 16
=50.24 sq cm
144 - 50.24 = 93.76 sq cm shaded area.