Question

answer the 19,20 sum

Answer 1

19.for the polygon,
n=9
sum of interior angles=[(2n-4)×90]degree
=[(2×9-4)]×90
=14×90
=1260 degree
each interior angle =1260/9
=140 degree
each exterior angle=(180-140) degree
=40 degree

20.(¡).when a dice is rolled,
p(a number less than 7)=6/6
=1
(¡¡)when a dice is rolled,
p(a number greater than 5)=1/6

Answer 2

19.the answer to this question is 40degree.
20.the answer to this question is 1/6